21090228

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{397}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 52153920

約数和(自身を除く): 31063692

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228, 233, 397, 466, 699, 794, 932, 1191, 1398, 1588, 2382, 2796, 4427, 4764, 7543, 8854, 13281, 15086, 17708, 22629, 26562, 30172, 45258, 53124, 90516, 92501, 185002, 277503, 370004, 555006, 1110012, 1757519, 3515038, 5272557, 7030076, 10545114, 21090228]

約数ペア:

[(1, 21090228), (2, 10545114), (3, 7030076), (4, 5272557), (6, 3515038), (12, 1757519), (19, 1110012), (38, 555006), (57, 370004), (76, 277503), (114, 185002), (228, 92501), (233, 90516), (397, 53124), (466, 45258), (699, 30172), (794, 26562), (932, 22629), (1191, 17708), (1398, 15086), (1588, 13281), (2382, 8854), (2796, 7543), (4427, 4764)]