21528598

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:221

約数の個数: 64

約数和(自身を含む): 42900480

約数和(自身を除く): 21371882

約数列:

[1, 2, 7, 13, 14, 23, 26, 37, 46, 74, 91, 139, 161, 182, 259, 278, 299, 322, 481, 518, 598, 851, 962, 973, 1702, 1807, 1946, 2093, 3197, 3367, 3614, 4186, 5143, 5957, 6394, 6734, 10286, 11063, 11914, 12649, 22126, 22379, 25298, 36001, 41561, 44758, 66859, 72002, 77441, 83122, 118289, 133718, 154882, 236578, 290927, 468013, 581854, 828023, 936026, 1537757, 1656046, 3075514, 10764299, 21528598]

約数ペア:

[(1, 21528598), (2, 10764299), (7, 3075514), (13, 1656046), (14, 1537757), (23, 936026), (26, 828023), (37, 581854), (46, 468013), (74, 290927), (91, 236578), (139, 154882), (161, 133718), (182, 118289), (259, 83122), (278, 77441), (299, 72002), (322, 66859), (481, 44758), (518, 41561), (598, 36001), (851, 25298), (962, 22379), (973, 22126), (1702, 12649), (1807, 11914), (1946, 11063), (2093, 10286), (3197, 6734), (3367, 6394), (3614, 5957), (4186, 5143)]