161721280

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:163

約数の個数: 224

約数和(自身を含む): 476365824

約数和(自身を除く): 314644544

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 43, 46, 56, 64, 70, 73, 80, 86, 92, 112, 115, 140, 146, 160, 161, 172, 184, 215, 224, 230, 280, 292, 301, 320, 322, 344, 365, 368, 430, 448, 460, 511, 560, 584, 602, 644, 688, 730, 736, 805, 860, 920, 989, 1022, 1120, 1168, 1204, 1288, 1376, 1460, 1472, 1505, 1610, 1679, 1720, 1840, 1978, 2044, 2240, 2336, 2408, 2555, 2576, 2752, 2920, 3010, 3139, 3220, 3358, 3440, 3680, 3956, 4088, 4672, 4816, 4945, 5110, 5152, 5840, 6020, 6278, 6440, 6716, 6880, 6923, 7360, 7912, 8176, 8395, 9632, 9890, 10220, 10304, 11680, 11753, 12040, 12556, 12880, 13432, 13760, 13846, 15695, 15824, 16352, 16790, 19264, 19780, 20440, 21973, 23360, 23506, 24080, 25112, 25760, 26864, 27692, 31390, 31648, 32704, 33580, 34615, 39560, 40880, 43946, 47012, 48160, 50224, 51520, 53728, 55384, 58765, 62780, 63296, 67160, 69230, 72197, 79120, 81760, 87892, 94024, 96320, 100448, 107456, 109865, 110768, 117530, 125560, 134320, 138460, 144394, 158240, 163520, 175784, 188048, 200896, 219730, 221536, 235060, 251120, 268640, 276920, 288788, 316480, 351568, 360985, 376096, 439460, 443072, 470120, 502240, 505379, 537280, 553840, 577576, 703136, 721970, 752192, 878920, 940240, 1004480, 1010758, 1107680, 1155152, 1406272, 1443940, 1757840, 1880480, 2021516, 2215360, 2310304, 2526895, 2887880, 3515680, 3760960, 4043032, 4620608, 5053790, 5775760, 7031360, 8086064, 10107580, 11551520, 16172128, 20215160, 23103040, 32344256, 40430320, 80860640, 161721280]

約数ペア:

[(1, 161721280), (2, 80860640), (4, 40430320), (5, 32344256), (7, 23103040), (8, 20215160), (10, 16172128), (14, 11551520), (16, 10107580), (20, 8086064), (23, 7031360), (28, 5775760), (32, 5053790), (35, 4620608), (40, 4043032), (43, 3760960), (46, 3515680), (56, 2887880), (64, 2526895), (70, 2310304), (73, 2215360), (80, 2021516), (86, 1880480), (92, 1757840), (112, 1443940), (115, 1406272), (140, 1155152), (146, 1107680), (160, 1010758), (161, 1004480), (172, 940240), (184, 878920), (215, 752192), (224, 721970), (230, 703136), (280, 577576), (292, 553840), (301, 537280), (320, 505379), (322, 502240), (344, 470120), (365, 443072), (368, 439460), (430, 376096), (448, 360985), (460, 351568), (511, 316480), (560, 288788), (584, 276920), (602, 268640), (644, 251120), (688, 235060), (730, 221536), (736, 219730), (805, 200896), (860, 188048), (920, 175784), (989, 163520), (1022, 158240), (1120, 144394), (1168, 138460), (1204, 134320), (1288, 125560), (1376, 117530), (1460, 110768), (1472, 109865), (1505, 107456), (1610, 100448), (1679, 96320), (1720, 94024), (1840, 87892), (1978, 81760), (2044, 79120), (2240, 72197), (2336, 69230), (2408, 67160), (2555, 63296), (2576, 62780), (2752, 58765), (2920, 55384), (3010, 53728), (3139, 51520), (3220, 50224), (3358, 48160), (3440, 47012), (3680, 43946), (3956, 40880), (4088, 39560), (4672, 34615), (4816, 33580), (4945, 32704), (5110, 31648), (5152, 31390), (5840, 27692), (6020, 26864), (6278, 25760), (6440, 25112), (6716, 24080), (6880, 23506), (6923, 23360), (7360, 21973), (7912, 20440), (8176, 19780), (8395, 19264), (9632, 16790), (9890, 16352), (10220, 15824), (10304, 15695), (11680, 13846), (11753, 13760), (12040, 13432), (12556, 12880)]