21905070

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1619}}^1$

素因数の和:1681

約数の個数: 64

約数和(自身を含む): 58786560

約数和(自身を除く): 36881490

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 41, 55, 66, 82, 110, 123, 165, 205, 246, 330, 410, 451, 615, 902, 1230, 1353, 1619, 2255, 2706, 3238, 4510, 4857, 6765, 8095, 9714, 13530, 16190, 17809, 24285, 35618, 48570, 53427, 66379, 89045, 106854, 132758, 178090, 199137, 267135, 331895, 398274, 534270, 663790, 730169, 995685, 1460338, 1991370, 2190507, 3650845, 4381014, 7301690, 10952535, 21905070]

約数ペア:

[(1, 21905070), (2, 10952535), (3, 7301690), (5, 4381014), (6, 3650845), (10, 2190507), (11, 1991370), (15, 1460338), (22, 995685), (30, 730169), (33, 663790), (41, 534270), (55, 398274), (66, 331895), (82, 267135), (110, 199137), (123, 178090), (165, 132758), (205, 106854), (246, 89045), (330, 66379), (410, 53427), (451, 48570), (615, 35618), (902, 24285), (1230, 17809), (1353, 16190), (1619, 13530), (2255, 9714), (2706, 8095), (3238, 6765), (4510, 4857)]