18042680

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{167}}^1$

素因数の和:288

約数の個数: 64

約数和(自身を含む): 42517440

約数和(自身を除く): 24474760

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 73, 74, 146, 148, 167, 185, 292, 296, 334, 365, 370, 584, 668, 730, 740, 835, 1336, 1460, 1480, 1670, 2701, 2920, 3340, 5402, 6179, 6680, 10804, 12191, 12358, 13505, 21608, 24382, 24716, 27010, 30895, 48764, 49432, 54020, 60955, 61790, 97528, 108040, 121910, 123580, 243820, 247160, 451067, 487640, 902134, 1804268, 2255335, 3608536, 4510670, 9021340, 18042680]

約数ペア:

[(1, 18042680), (2, 9021340), (4, 4510670), (5, 3608536), (8, 2255335), (10, 1804268), (20, 902134), (37, 487640), (40, 451067), (73, 247160), (74, 243820), (146, 123580), (148, 121910), (167, 108040), (185, 97528), (292, 61790), (296, 60955), (334, 54020), (365, 49432), (370, 48764), (584, 30895), (668, 27010), (730, 24716), (740, 24382), (835, 21608), (1336, 13505), (1460, 12358), (1480, 12191), (1670, 10804), (2701, 6680), (2920, 6179), (3340, 5402)]