21808010

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{863}}^1$

素因数の和:915

約数の個数: 48

約数和(自身を含む): 47402496

約数和(自身を除く): 25594486

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 133, 190, 266, 361, 665, 722, 863, 1330, 1726, 1805, 2527, 3610, 4315, 5054, 6041, 8630, 12082, 12635, 16397, 25270, 30205, 32794, 60410, 81985, 114779, 163970, 229558, 311543, 573895, 623086, 1147790, 1557715, 2180801, 3115430, 4361602, 10904005, 21808010]

約数ペア:

[(1, 21808010), (2, 10904005), (5, 4361602), (7, 3115430), (10, 2180801), (14, 1557715), (19, 1147790), (35, 623086), (38, 573895), (70, 311543), (95, 229558), (133, 163970), (190, 114779), (266, 81985), (361, 60410), (665, 32794), (722, 30205), (863, 25270), (1330, 16397), (1726, 12635), (1805, 12082), (2527, 8630), (3610, 6041), (4315, 5054)]