20418320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{677}}^1$

素因数の和:732

約数の個数: 80

約数和(自身を含む): 52965360

約数和(自身を除く): 32547040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 29, 40, 52, 58, 65, 80, 104, 116, 130, 145, 208, 232, 260, 290, 377, 464, 520, 580, 677, 754, 1040, 1160, 1354, 1508, 1885, 2320, 2708, 3016, 3385, 3770, 5416, 6032, 6770, 7540, 8801, 10832, 13540, 15080, 17602, 19633, 27080, 30160, 35204, 39266, 44005, 54160, 70408, 78532, 88010, 98165, 140816, 157064, 176020, 196330, 255229, 314128, 352040, 392660, 510458, 704080, 785320, 1020916, 1276145, 1570640, 2041832, 2552290, 4083664, 5104580, 10209160, 20418320]

約数ペア:

[(1, 20418320), (2, 10209160), (4, 5104580), (5, 4083664), (8, 2552290), (10, 2041832), (13, 1570640), (16, 1276145), (20, 1020916), (26, 785320), (29, 704080), (40, 510458), (52, 392660), (58, 352040), (65, 314128), (80, 255229), (104, 196330), (116, 176020), (130, 157064), (145, 140816), (208, 98165), (232, 88010), (260, 78532), (290, 70408), (377, 54160), (464, 44005), (520, 39266), (580, 35204), (677, 30160), (754, 27080), (1040, 19633), (1160, 17602), (1354, 15080), (1508, 13540), (1885, 10832), (2320, 8801), (2708, 7540), (3016, 6770), (3385, 6032), (3770, 5416)]