7986940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{139}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 19368720

約数和(自身を除く): 11381780

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 139, 169, 170, 221, 260, 278, 338, 340, 442, 556, 676, 695, 845, 884, 1105, 1390, 1690, 1807, 2210, 2363, 2780, 2873, 3380, 3614, 4420, 4726, 5746, 7228, 9035, 9452, 11492, 11815, 14365, 18070, 23491, 23630, 28730, 30719, 36140, 46982, 47260, 57460, 61438, 93964, 117455, 122876, 153595, 234910, 307190, 399347, 469820, 614380, 798694, 1597388, 1996735, 3993470, 7986940]

約数ペア:

[(1, 7986940), (2, 3993470), (4, 1996735), (5, 1597388), (10, 798694), (13, 614380), (17, 469820), (20, 399347), (26, 307190), (34, 234910), (52, 153595), (65, 122876), (68, 117455), (85, 93964), (130, 61438), (139, 57460), (169, 47260), (170, 46982), (221, 36140), (260, 30719), (278, 28730), (338, 23630), (340, 23491), (442, 18070), (556, 14365), (676, 11815), (695, 11492), (845, 9452), (884, 9035), (1105, 7228), (1390, 5746), (1690, 4726), (1807, 4420), (2210, 3614), (2363, 3380), (2780, 2873)]