1290644920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1698217}}^1$

素因数の和:1698247

約数の個数: 32

約数和(自身を含む): 3056792400

約数和(自身を除く): 1766147480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 1698217, 3396434, 6792868, 8491085, 13585736, 16982170, 32266123, 33964340, 64532246, 67928680, 129064492, 161330615, 258128984, 322661230, 645322460, 1290644920]

約数ペア:

[(1, 1290644920), (2, 645322460), (4, 322661230), (5, 258128984), (8, 161330615), (10, 129064492), (19, 67928680), (20, 64532246), (38, 33964340), (40, 32266123), (76, 16982170), (95, 13585736), (152, 8491085), (190, 6792868), (380, 3396434), (760, 1698217)]