778899472

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{1217}}^1$

素因数の和:1436

約数の個数: 80

約数和(自身を含む): 1731732912

約数和(自身を除く): 952833440

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 181, 208, 221, 272, 362, 442, 724, 884, 1217, 1448, 1768, 2353, 2434, 2896, 3077, 3536, 4706, 4868, 6154, 9412, 9736, 12308, 15821, 18824, 19472, 20689, 24616, 31642, 37648, 40001, 41378, 49232, 63284, 80002, 82756, 126568, 160004, 165512, 220277, 253136, 268957, 320008, 331024, 440554, 537914, 640016, 881108, 1075828, 1762216, 2151656, 2863601, 3524432, 3744709, 4303312, 5727202, 7489418, 11454404, 14978836, 22908808, 29957672, 45817616, 48681217, 59915344, 97362434, 194724868, 389449736, 778899472]

約数ペア:

[(1, 778899472), (2, 389449736), (4, 194724868), (8, 97362434), (13, 59915344), (16, 48681217), (17, 45817616), (26, 29957672), (34, 22908808), (52, 14978836), (68, 11454404), (104, 7489418), (136, 5727202), (181, 4303312), (208, 3744709), (221, 3524432), (272, 2863601), (362, 2151656), (442, 1762216), (724, 1075828), (884, 881108), (1217, 640016), (1448, 537914), (1768, 440554), (2353, 331024), (2434, 320008), (2896, 268957), (3077, 253136), (3536, 220277), (4706, 165512), (4868, 160004), (6154, 126568), (9412, 82756), (9736, 80002), (12308, 63284), (15821, 49232), (18824, 41378), (19472, 40001), (20689, 37648), (24616, 31642)]