19667440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{18911}}^1$

素因数の和:18937

約数の個数: 40

約数和(自身を含む): 49246848

約数和(自身を除く): 29579408

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 18911, 37822, 75644, 94555, 151288, 189110, 245843, 302576, 378220, 491686, 756440, 983372, 1229215, 1512880, 1966744, 2458430, 3933488, 4916860, 9833720, 19667440]

約数ペア:

[(1, 19667440), (2, 9833720), (4, 4916860), (5, 3933488), (8, 2458430), (10, 1966744), (13, 1512880), (16, 1229215), (20, 983372), (26, 756440), (40, 491686), (52, 378220), (65, 302576), (80, 245843), (104, 189110), (130, 151288), (208, 94555), (260, 75644), (520, 37822), (1040, 18911)]