18229240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1$

素因数の和:344

約数の個数: 64

約数和(自身を含む): 43211520

約数和(自身を除く): 24982280

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 61, 62, 122, 124, 155, 241, 244, 248, 305, 310, 482, 488, 610, 620, 964, 1205, 1220, 1240, 1891, 1928, 2410, 2440, 3782, 4820, 7471, 7564, 9455, 9640, 14701, 14942, 15128, 18910, 29402, 29884, 37355, 37820, 58804, 59768, 73505, 74710, 75640, 117608, 147010, 149420, 294020, 298840, 455731, 588040, 911462, 1822924, 2278655, 3645848, 4557310, 9114620, 18229240]

約数ペア:

[(1, 18229240), (2, 9114620), (4, 4557310), (5, 3645848), (8, 2278655), (10, 1822924), (20, 911462), (31, 588040), (40, 455731), (61, 298840), (62, 294020), (122, 149420), (124, 147010), (155, 117608), (241, 75640), (244, 74710), (248, 73505), (305, 59768), (310, 58804), (482, 37820), (488, 37355), (610, 29884), (620, 29402), (964, 18910), (1205, 15128), (1220, 14942), (1240, 14701), (1891, 9640), (1928, 9455), (2410, 7564), (2440, 7471), (3782, 4820)]