19981212

素因数分解:

$2^2\times 3^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{353}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 48172320

約数和(自身を除く): 28191108

約数列:

[1, 2, 3, 4, 6, 12, 53, 89, 106, 159, 178, 212, 267, 318, 353, 356, 534, 636, 706, 1059, 1068, 1412, 2118, 4236, 4717, 9434, 14151, 18709, 18868, 28302, 31417, 37418, 56127, 56604, 62834, 74836, 94251, 112254, 125668, 188502, 224508, 377004, 1665101, 3330202, 4995303, 6660404, 9990606, 19981212]

約数ペア:

[(1, 19981212), (2, 9990606), (3, 6660404), (4, 4995303), (6, 3330202), (12, 1665101), (53, 377004), (89, 224508), (106, 188502), (159, 125668), (178, 112254), (212, 94251), (267, 74836), (318, 62834), (353, 56604), (356, 56127), (534, 37418), (636, 31417), (706, 28302), (1059, 18868), (1068, 18709), (1412, 14151), (2118, 9434), (4236, 4717)]