21165780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5783}}^1$

素因数の和:5856

約数の個数: 48

約数和(自身を含む): 60246144

約数和(自身を除く): 39080364

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 122, 183, 244, 305, 366, 610, 732, 915, 1220, 1830, 3660, 5783, 11566, 17349, 23132, 28915, 34698, 57830, 69396, 86745, 115660, 173490, 346980, 352763, 705526, 1058289, 1411052, 1763815, 2116578, 3527630, 4233156, 5291445, 7055260, 10582890, 21165780]

約数ペア:

[(1, 21165780), (2, 10582890), (3, 7055260), (4, 5291445), (5, 4233156), (6, 3527630), (10, 2116578), (12, 1763815), (15, 1411052), (20, 1058289), (30, 705526), (60, 352763), (61, 346980), (122, 173490), (183, 115660), (244, 86745), (305, 69396), (366, 57830), (610, 34698), (732, 28915), (915, 23132), (1220, 17349), (1830, 11566), (3660, 5783)]