20959320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{449}}^1$

素因数の和:852

約数の個数: 64

約数和(自身を含む): 63180000

約数和(自身を除く): 42220680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 389, 449, 778, 898, 1167, 1347, 1556, 1796, 1945, 2245, 2334, 2694, 3112, 3592, 3890, 4490, 4668, 5388, 5835, 6735, 7780, 8980, 9336, 10776, 11670, 13470, 15560, 17960, 23340, 26940, 46680, 53880, 174661, 349322, 523983, 698644, 873305, 1047966, 1397288, 1746610, 2095932, 2619915, 3493220, 4191864, 5239830, 6986440, 10479660, 20959320]

約数ペア:

[(1, 20959320), (2, 10479660), (3, 6986440), (4, 5239830), (5, 4191864), (6, 3493220), (8, 2619915), (10, 2095932), (12, 1746610), (15, 1397288), (20, 1047966), (24, 873305), (30, 698644), (40, 523983), (60, 349322), (120, 174661), (389, 53880), (449, 46680), (778, 26940), (898, 23340), (1167, 17960), (1347, 15560), (1556, 13470), (1796, 11670), (1945, 10776), (2245, 9336), (2334, 8980), (2694, 7780), (3112, 6735), (3592, 5835), (3890, 5388), (4490, 4668)]