20921764

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{3457}}^1$

素因数の和:3567

約数の個数: 24

約数和(自身を含む): 39213720

約数和(自身を除く): 18291956

約数列:

[1, 2, 4, 17, 34, 68, 89, 178, 356, 1513, 3026, 3457, 6052, 6914, 13828, 58769, 117538, 235076, 307673, 615346, 1230692, 5230441, 10460882, 20921764]

約数ペア:

[(1, 20921764), (2, 10460882), (4, 5230441), (17, 1230692), (34, 615346), (68, 307673), (89, 235076), (178, 117538), (356, 58769), (1513, 13828), (3026, 6914), (3457, 6052)]