399423892

素因数分解:

$2^2\times 7^2\times {\mathrm{101}}^1\times {\mathrm{20177}}^1$

素因数の和:20296

約数の個数: 36

約数和(自身を含む): 821204244

約数和(自身を除く): 421780352

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 101, 196, 202, 404, 707, 1414, 2828, 4949, 9898, 19796, 20177, 40354, 80708, 141239, 282478, 564956, 988673, 1977346, 2037877, 3954692, 4075754, 8151508, 14265139, 28530278, 57060556, 99855973, 199711946, 399423892]

約数ペア:

[(1, 399423892), (2, 199711946), (4, 99855973), (7, 57060556), (14, 28530278), (28, 14265139), (49, 8151508), (98, 4075754), (101, 3954692), (196, 2037877), (202, 1977346), (404, 988673), (707, 564956), (1414, 282478), (2828, 141239), (4949, 80708), (9898, 40354), (19796, 20177)]