18243680

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{179}}^1$

素因数の和:221

約数の個数: 144

約数和(自身を含む): 54295920

約数和(自身を除く): 36052240

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 160, 179, 182, 196, 208, 224, 245, 260, 280, 358, 364, 392, 416, 455, 490, 520, 560, 637, 716, 728, 784, 895, 910, 980, 1040, 1120, 1253, 1274, 1432, 1456, 1568, 1790, 1820, 1960, 2080, 2327, 2506, 2548, 2864, 2912, 3185, 3580, 3640, 3920, 4654, 5012, 5096, 5728, 6265, 6370, 7160, 7280, 7840, 8771, 9308, 10024, 10192, 11635, 12530, 12740, 14320, 14560, 16289, 17542, 18616, 20048, 20384, 23270, 25060, 25480, 28640, 32578, 35084, 37232, 40096, 43855, 46540, 50120, 50960, 65156, 70168, 74464, 81445, 87710, 93080, 100240, 101920, 114023, 130312, 140336, 162890, 175420, 186160, 200480, 228046, 260624, 280672, 325780, 350840, 372320, 456092, 521248, 570115, 651560, 701680, 912184, 1140230, 1303120, 1403360, 1824368, 2280460, 2606240, 3648736, 4560920, 9121840, 18243680]

約数ペア:

[(1, 18243680), (2, 9121840), (4, 4560920), (5, 3648736), (7, 2606240), (8, 2280460), (10, 1824368), (13, 1403360), (14, 1303120), (16, 1140230), (20, 912184), (26, 701680), (28, 651560), (32, 570115), (35, 521248), (40, 456092), (49, 372320), (52, 350840), (56, 325780), (65, 280672), (70, 260624), (80, 228046), (91, 200480), (98, 186160), (104, 175420), (112, 162890), (130, 140336), (140, 130312), (160, 114023), (179, 101920), (182, 100240), (196, 93080), (208, 87710), (224, 81445), (245, 74464), (260, 70168), (280, 65156), (358, 50960), (364, 50120), (392, 46540), (416, 43855), (455, 40096), (490, 37232), (520, 35084), (560, 32578), (637, 28640), (716, 25480), (728, 25060), (784, 23270), (895, 20384), (910, 20048), (980, 18616), (1040, 17542), (1120, 16289), (1253, 14560), (1274, 14320), (1432, 12740), (1456, 12530), (1568, 11635), (1790, 10192), (1820, 10024), (1960, 9308), (2080, 8771), (2327, 7840), (2506, 7280), (2548, 7160), (2864, 6370), (2912, 6265), (3185, 5728), (3580, 5096), (3640, 5012), (3920, 4654)]