7420820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{379}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 17236800

約数和(自身を除く): 9815980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 379, 445, 758, 890, 979, 1516, 1780, 1895, 1958, 3790, 3916, 4169, 4895, 7580, 8338, 9790, 16676, 19580, 20845, 33731, 41690, 67462, 83380, 134924, 168655, 337310, 371041, 674620, 742082, 1484164, 1855205, 3710410, 7420820]

約数ペア:

[(1, 7420820), (2, 3710410), (4, 1855205), (5, 1484164), (10, 742082), (11, 674620), (20, 371041), (22, 337310), (44, 168655), (55, 134924), (89, 83380), (110, 67462), (178, 41690), (220, 33731), (356, 20845), (379, 19580), (445, 16676), (758, 9790), (890, 8338), (979, 7580), (1516, 4895), (1780, 4169), (1895, 3916), (1958, 3790)]