21755820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5107}}^1$

素因数の和:5190

約数の個数: 48

約数和(自身を含む): 61786368

約数和(自身を除く): 40030548

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 5107, 10214, 15321, 20428, 25535, 30642, 51070, 61284, 76605, 102140, 153210, 306420, 362597, 725194, 1087791, 1450388, 1812985, 2175582, 3625970, 4351164, 5438955, 7251940, 10877910, 21755820]

約数ペア:

[(1, 21755820), (2, 10877910), (3, 7251940), (4, 5438955), (5, 4351164), (6, 3625970), (10, 2175582), (12, 1812985), (15, 1450388), (20, 1087791), (30, 725194), (60, 362597), (71, 306420), (142, 153210), (213, 102140), (284, 76605), (355, 61284), (426, 51070), (710, 30642), (852, 25535), (1065, 20428), (1420, 15321), (2130, 10214), (4260, 5107)]