81900830

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{263}}^1$

素因数の和:449

約数の個数: 64

約数和(自身を含む): 171072000

約数和(自身を除く): 89171170

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 149, 190, 209, 263, 298, 418, 526, 745, 1045, 1315, 1490, 1639, 2090, 2630, 2831, 2893, 3278, 4997, 5662, 5786, 8195, 9994, 14155, 14465, 16390, 24985, 28310, 28930, 31141, 39187, 49970, 54967, 62282, 78374, 109934, 155705, 195935, 274835, 311410, 391870, 431057, 549670, 744553, 862114, 1489106, 2155285, 3722765, 4310570, 7445530, 8190083, 16380166, 40950415, 81900830]

約数ペア:

[(1, 81900830), (2, 40950415), (5, 16380166), (10, 8190083), (11, 7445530), (19, 4310570), (22, 3722765), (38, 2155285), (55, 1489106), (95, 862114), (110, 744553), (149, 549670), (190, 431057), (209, 391870), (263, 311410), (298, 274835), (418, 195935), (526, 155705), (745, 109934), (1045, 78374), (1315, 62282), (1490, 54967), (1639, 49970), (2090, 39187), (2630, 31141), (2831, 28930), (2893, 28310), (3278, 24985), (4997, 16390), (5662, 14465), (5786, 14155), (8195, 9994)]