647017640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{16063}}^1$

素因数の和:16146

約数の個数: 64

約数和(自身を含む): 1561420800

約数和(自身を除く): 914403160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 53, 76, 95, 106, 152, 190, 212, 265, 380, 424, 530, 760, 1007, 1060, 2014, 2120, 4028, 5035, 8056, 10070, 16063, 20140, 32126, 40280, 64252, 80315, 128504, 160630, 305197, 321260, 610394, 642520, 851339, 1220788, 1525985, 1702678, 2441576, 3051970, 3405356, 4256695, 6103940, 6810712, 8513390, 12207880, 16175441, 17026780, 32350882, 34053560, 64701764, 80877205, 129403528, 161754410, 323508820, 647017640]

約数ペア:

[(1, 647017640), (2, 323508820), (4, 161754410), (5, 129403528), (8, 80877205), (10, 64701764), (19, 34053560), (20, 32350882), (38, 17026780), (40, 16175441), (53, 12207880), (76, 8513390), (95, 6810712), (106, 6103940), (152, 4256695), (190, 3405356), (212, 3051970), (265, 2441576), (380, 1702678), (424, 1525985), (530, 1220788), (760, 851339), (1007, 642520), (1060, 610394), (2014, 321260), (2120, 305197), (4028, 160630), (5035, 128504), (8056, 80315), (10070, 64252), (16063, 40280), (20140, 32126)]