781456

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{17}}^2$

素因数の和:68

約数の個数: 45

約数和(自身を含む): 1741611

約数和(自身を除く): 960155

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 169, 208, 221, 272, 289, 338, 442, 578, 676, 884, 1156, 1352, 1768, 2312, 2704, 2873, 3536, 3757, 4624, 5746, 7514, 11492, 15028, 22984, 30056, 45968, 48841, 60112, 97682, 195364, 390728, 781456]

約数ペア:

[(1, 781456), (2, 390728), (4, 195364), (8, 97682), (13, 60112), (16, 48841), (17, 45968), (26, 30056), (34, 22984), (52, 15028), (68, 11492), (104, 7514), (136, 5746), (169, 4624), (208, 3757), (221, 3536), (272, 2873), (289, 2704), (338, 2312), (442, 1768), (578, 1352), (676, 1156)]