7890428

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{409}}^1$

素因数の和:486

約数の個数: 48

約数和(自身を含む): 17357760

約数和(自身を除く): 9467332

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 53, 91, 106, 182, 212, 364, 371, 409, 689, 742, 818, 1378, 1484, 1636, 2756, 2863, 4823, 5317, 5726, 9646, 10634, 11452, 19292, 21268, 21677, 37219, 43354, 74438, 86708, 148876, 151739, 281801, 303478, 563602, 606956, 1127204, 1972607, 3945214, 7890428]

約数ペア:

[(1, 7890428), (2, 3945214), (4, 1972607), (7, 1127204), (13, 606956), (14, 563602), (26, 303478), (28, 281801), (52, 151739), (53, 148876), (91, 86708), (106, 74438), (182, 43354), (212, 37219), (364, 21677), (371, 21268), (409, 19292), (689, 11452), (742, 10634), (818, 9646), (1378, 5726), (1484, 5317), (1636, 4823), (2756, 2863)]