20458040

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{601}}^1$

素因数の和:672

約数の個数: 64

約数和(自身を含む): 49412160

約数和(自身を除く): 28954120

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 37, 40, 46, 74, 92, 115, 148, 184, 185, 230, 296, 370, 460, 601, 740, 851, 920, 1202, 1480, 1702, 2404, 3005, 3404, 4255, 4808, 6010, 6808, 8510, 12020, 13823, 17020, 22237, 24040, 27646, 34040, 44474, 55292, 69115, 88948, 110584, 111185, 138230, 177896, 222370, 276460, 444740, 511451, 552920, 889480, 1022902, 2045804, 2557255, 4091608, 5114510, 10229020, 20458040]

約数ペア:

[(1, 20458040), (2, 10229020), (4, 5114510), (5, 4091608), (8, 2557255), (10, 2045804), (20, 1022902), (23, 889480), (37, 552920), (40, 511451), (46, 444740), (74, 276460), (92, 222370), (115, 177896), (148, 138230), (184, 111185), (185, 110584), (230, 88948), (296, 69115), (370, 55292), (460, 44474), (601, 34040), (740, 27646), (851, 24040), (920, 22237), (1202, 17020), (1480, 13823), (1702, 12020), (2404, 8510), (3005, 6808), (3404, 6010), (4255, 4808)]