18944080

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5507}}^1$

素因数の和:5563

約数の個数: 40

約数和(自身を含む): 45077472

約数和(自身を除く): 26133392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5507, 11014, 22028, 27535, 44056, 55070, 88112, 110140, 220280, 236801, 440560, 473602, 947204, 1184005, 1894408, 2368010, 3788816, 4736020, 9472040, 18944080]

約数ペア:

[(1, 18944080), (2, 9472040), (4, 4736020), (5, 3788816), (8, 2368010), (10, 1894408), (16, 1184005), (20, 947204), (40, 473602), (43, 440560), (80, 236801), (86, 220280), (172, 110140), (215, 88112), (344, 55070), (430, 44056), (688, 27535), (860, 22028), (1720, 11014), (3440, 5507)]