639440640

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1181}}^1$

素因数の和:1255

約数の個数: 216

約数和(自身を含む): 2261383488

約数和(自身を除く): 1621942848

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 47, 48, 60, 64, 72, 80, 90, 94, 96, 120, 128, 141, 144, 160, 180, 188, 192, 235, 240, 256, 282, 288, 320, 360, 376, 384, 423, 470, 480, 564, 576, 640, 705, 720, 752, 768, 846, 940, 960, 1128, 1152, 1181, 1280, 1410, 1440, 1504, 1692, 1880, 1920, 2115, 2256, 2304, 2362, 2820, 2880, 3008, 3384, 3543, 3760, 3840, 4230, 4512, 4724, 5640, 5760, 5905, 6016, 6768, 7086, 7520, 8460, 9024, 9448, 10629, 11280, 11520, 11810, 12032, 13536, 14172, 15040, 16920, 17715, 18048, 18896, 21258, 22560, 23620, 27072, 28344, 30080, 33840, 35430, 36096, 37792, 42516, 45120, 47240, 53145, 54144, 55507, 56688, 60160, 67680, 70860, 75584, 85032, 90240, 94480, 106290, 108288, 111014, 113376, 135360, 141720, 151168, 166521, 170064, 180480, 188960, 212580, 222028, 226752, 270720, 277535, 283440, 302336, 333042, 340128, 377920, 425160, 444056, 453504, 499563, 541440, 555070, 566880, 666084, 680256, 755840, 832605, 850320, 888112, 907008, 999126, 1110140, 1133760, 1332168, 1360512, 1511680, 1665210, 1700640, 1776224, 1998252, 2220280, 2267520, 2497815, 2664336, 2721024, 3330420, 3401280, 3552448, 3996504, 4440560, 4535040, 4995630, 5328672, 6660840, 6802560, 7104896, 7993008, 8881120, 9991260, 10657344, 13321680, 13605120, 14209792, 15986016, 17762240, 19982520, 21314688, 26643360, 31972032, 35524480, 39965040, 42629376, 53286720, 63944064, 71048960, 79930080, 106573440, 127888128, 159860160, 213146880, 319720320, 639440640]

約数ペア:

[(1, 639440640), (2, 319720320), (3, 213146880), (4, 159860160), (5, 127888128), (6, 106573440), (8, 79930080), (9, 71048960), (10, 63944064), (12, 53286720), (15, 42629376), (16, 39965040), (18, 35524480), (20, 31972032), (24, 26643360), (30, 21314688), (32, 19982520), (36, 17762240), (40, 15986016), (45, 14209792), (47, 13605120), (48, 13321680), (60, 10657344), (64, 9991260), (72, 8881120), (80, 7993008), (90, 7104896), (94, 6802560), (96, 6660840), (120, 5328672), (128, 4995630), (141, 4535040), (144, 4440560), (160, 3996504), (180, 3552448), (188, 3401280), (192, 3330420), (235, 2721024), (240, 2664336), (256, 2497815), (282, 2267520), (288, 2220280), (320, 1998252), (360, 1776224), (376, 1700640), (384, 1665210), (423, 1511680), (470, 1360512), (480, 1332168), (564, 1133760), (576, 1110140), (640, 999126), (705, 907008), (720, 888112), (752, 850320), (768, 832605), (846, 755840), (940, 680256), (960, 666084), (1128, 566880), (1152, 555070), (1181, 541440), (1280, 499563), (1410, 453504), (1440, 444056), (1504, 425160), (1692, 377920), (1880, 340128), (1920, 333042), (2115, 302336), (2256, 283440), (2304, 277535), (2362, 270720), (2820, 226752), (2880, 222028), (3008, 212580), (3384, 188960), (3543, 180480), (3760, 170064), (3840, 166521), (4230, 151168), (4512, 141720), (4724, 135360), (5640, 113376), (5760, 111014), (5905, 108288), (6016, 106290), (6768, 94480), (7086, 90240), (7520, 85032), (8460, 75584), (9024, 70860), (9448, 67680), (10629, 60160), (11280, 56688), (11520, 55507), (11810, 54144), (12032, 53145), (13536, 47240), (14172, 45120), (15040, 42516), (16920, 37792), (17715, 36096), (18048, 35430), (18896, 33840), (21258, 30080), (22560, 28344), (23620, 27072)]