217512880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{209147}}^1$

素因数の和:209173

約数の個数: 40

約数和(自身を含む): 544621392

約数和(自身を除く): 327108512

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 209147, 418294, 836588, 1045735, 1673176, 2091470, 2718911, 3346352, 4182940, 5437822, 8365880, 10875644, 13594555, 16731760, 21751288, 27189110, 43502576, 54378220, 108756440, 217512880]

約数ペア:

[(1, 217512880), (2, 108756440), (4, 54378220), (5, 43502576), (8, 27189110), (10, 21751288), (13, 16731760), (16, 13594555), (20, 10875644), (26, 8365880), (40, 5437822), (52, 4182940), (65, 3346352), (80, 2718911), (104, 2091470), (130, 1673176), (208, 1045735), (260, 836588), (520, 418294), (1040, 209147)]