18644240

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13709}}^1$

素因数の和:13739

約数の個数: 40

約数和(自身を含む): 45901080

約数和(自身を除く): 27256840

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 13709, 27418, 54836, 68545, 109672, 137090, 219344, 233053, 274180, 466106, 548360, 932212, 1096720, 1165265, 1864424, 2330530, 3728848, 4661060, 9322120, 18644240]

約数ペア:

[(1, 18644240), (2, 9322120), (4, 4661060), (5, 3728848), (8, 2330530), (10, 1864424), (16, 1165265), (17, 1096720), (20, 932212), (34, 548360), (40, 466106), (68, 274180), (80, 233053), (85, 219344), (136, 137090), (170, 109672), (272, 68545), (340, 54836), (680, 27418), (1360, 13709)]