215289140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^2\times {\mathrm{443}}^1$

素因数の和:557

約数の個数: 72

約数和(自身を含む): 505062432

約数和(自身を除く): 289773292

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 47, 55, 94, 110, 188, 220, 235, 443, 470, 517, 886, 940, 1034, 1772, 2068, 2209, 2215, 2585, 4418, 4430, 4873, 5170, 8836, 8860, 9746, 10340, 11045, 19492, 20821, 22090, 24299, 24365, 41642, 44180, 48598, 48730, 83284, 97196, 97460, 104105, 121495, 208210, 229031, 242990, 416420, 458062, 485980, 916124, 978587, 1145155, 1957174, 2290310, 3914348, 4580620, 4892935, 9785870, 10764457, 19571740, 21528914, 43057828, 53822285, 107644570, 215289140]

約数ペア:

[(1, 215289140), (2, 107644570), (4, 53822285), (5, 43057828), (10, 21528914), (11, 19571740), (20, 10764457), (22, 9785870), (44, 4892935), (47, 4580620), (55, 3914348), (94, 2290310), (110, 1957174), (188, 1145155), (220, 978587), (235, 916124), (443, 485980), (470, 458062), (517, 416420), (886, 242990), (940, 229031), (1034, 208210), (1772, 121495), (2068, 104105), (2209, 97460), (2215, 97196), (2585, 83284), (4418, 48730), (4430, 48598), (4873, 44180), (5170, 41642), (8836, 24365), (8860, 24299), (9746, 22090), (10340, 20821), (11045, 19492)]