21266630

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:485

約数の個数: 64

約数和(自身を含む): 48522240

約数和(自身を除く): 27255610

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 71, 77, 110, 142, 154, 355, 385, 389, 497, 710, 770, 778, 781, 994, 1562, 1945, 2485, 2723, 3890, 3905, 4279, 4970, 5446, 5467, 7810, 8558, 10934, 13615, 21395, 27230, 27335, 27619, 29953, 42790, 54670, 55238, 59906, 138095, 149765, 193333, 276190, 299530, 303809, 386666, 607618, 966665, 1519045, 1933330, 2126663, 3038090, 4253326, 10633315, 21266630]

約数ペア:

[(1, 21266630), (2, 10633315), (5, 4253326), (7, 3038090), (10, 2126663), (11, 1933330), (14, 1519045), (22, 966665), (35, 607618), (55, 386666), (70, 303809), (71, 299530), (77, 276190), (110, 193333), (142, 149765), (154, 138095), (355, 59906), (385, 55238), (389, 54670), (497, 42790), (710, 29953), (770, 27619), (778, 27335), (781, 27230), (994, 21395), (1562, 13615), (1945, 10934), (2485, 8558), (2723, 7810), (3890, 5467), (3905, 5446), (4279, 4970)]