20928060

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{233}}^1\times {\mathrm{499}}^1$

素因数の和:747

約数の個数: 72

約数和(自身を含む): 63882000

約数和(自身を除く): 42953940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 233, 466, 499, 699, 932, 998, 1165, 1398, 1497, 1996, 2097, 2330, 2495, 2796, 2994, 3495, 4194, 4491, 4660, 4990, 5988, 6990, 7485, 8388, 8982, 9980, 10485, 13980, 14970, 17964, 20970, 22455, 29940, 41940, 44910, 89820, 116267, 232534, 348801, 465068, 581335, 697602, 1046403, 1162670, 1395204, 1744005, 2092806, 2325340, 3488010, 4185612, 5232015, 6976020, 10464030, 20928060]

約数ペア:

[(1, 20928060), (2, 10464030), (3, 6976020), (4, 5232015), (5, 4185612), (6, 3488010), (9, 2325340), (10, 2092806), (12, 1744005), (15, 1395204), (18, 1162670), (20, 1046403), (30, 697602), (36, 581335), (45, 465068), (60, 348801), (90, 232534), (180, 116267), (233, 89820), (466, 44910), (499, 41940), (699, 29940), (932, 22455), (998, 20970), (1165, 17964), (1398, 14970), (1497, 13980), (1996, 10485), (2097, 9980), (2330, 8982), (2495, 8388), (2796, 7485), (2994, 6990), (3495, 5988), (4194, 4990), (4491, 4660)]