21890460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5981}}^1$

素因数の和:6054

約数の個数: 48

約数和(自身を含む): 62308512

約数和(自身を除く): 40418052

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, 5981, 11962, 17943, 23924, 29905, 35886, 59810, 71772, 89715, 119620, 179430, 358860, 364841, 729682, 1094523, 1459364, 1824205, 2189046, 3648410, 4378092, 5472615, 7296820, 10945230, 21890460]

約数ペア:

[(1, 21890460), (2, 10945230), (3, 7296820), (4, 5472615), (5, 4378092), (6, 3648410), (10, 2189046), (12, 1824205), (15, 1459364), (20, 1094523), (30, 729682), (60, 364841), (61, 358860), (122, 179430), (183, 119620), (244, 89715), (305, 71772), (366, 59810), (610, 35886), (732, 29905), (915, 23924), (1220, 17943), (1830, 11962), (3660, 5981)]