256186920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{461}}^1$

素因数の和:907

約数の個数: 128

約数和(自身を含む): 842244480

約数和(自身を除く): 586057560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 264, 330, 421, 440, 461, 660, 842, 922, 1263, 1320, 1383, 1684, 1844, 2105, 2305, 2526, 2766, 3368, 3688, 4210, 4610, 4631, 5052, 5071, 5532, 6315, 6915, 8420, 9220, 9262, 10104, 10142, 11064, 12630, 13830, 13893, 15213, 16840, 18440, 18524, 20284, 23155, 25260, 25355, 27660, 27786, 30426, 37048, 40568, 46310, 50520, 50710, 55320, 55572, 60852, 69465, 76065, 92620, 101420, 111144, 121704, 138930, 152130, 185240, 194081, 202840, 277860, 304260, 388162, 555720, 582243, 608520, 776324, 970405, 1164486, 1552648, 1940810, 2134891, 2328972, 2911215, 3881620, 4269782, 4657944, 5822430, 6404673, 7763240, 8539564, 10674455, 11644860, 12809346, 17079128, 21348910, 23289720, 25618692, 32023365, 42697820, 51237384, 64046730, 85395640, 128093460, 256186920]

約数ペア:

[(1, 256186920), (2, 128093460), (3, 85395640), (4, 64046730), (5, 51237384), (6, 42697820), (8, 32023365), (10, 25618692), (11, 23289720), (12, 21348910), (15, 17079128), (20, 12809346), (22, 11644860), (24, 10674455), (30, 8539564), (33, 7763240), (40, 6404673), (44, 5822430), (55, 4657944), (60, 4269782), (66, 3881620), (88, 2911215), (110, 2328972), (120, 2134891), (132, 1940810), (165, 1552648), (220, 1164486), (264, 970405), (330, 776324), (421, 608520), (440, 582243), (461, 555720), (660, 388162), (842, 304260), (922, 277860), (1263, 202840), (1320, 194081), (1383, 185240), (1684, 152130), (1844, 138930), (2105, 121704), (2305, 111144), (2526, 101420), (2766, 92620), (3368, 76065), (3688, 69465), (4210, 60852), (4610, 55572), (4631, 55320), (5052, 50710), (5071, 50520), (5532, 46310), (6315, 40568), (6915, 37048), (8420, 30426), (9220, 27786), (9262, 27660), (10104, 25355), (10142, 25260), (11064, 23155), (12630, 20284), (13830, 18524), (13893, 18440), (15213, 16840)]