15851980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1\times {\mathrm{181}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 34856640

約数和(自身を除く): 19004660

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 151, 181, 290, 302, 362, 580, 604, 724, 755, 905, 1510, 1810, 3020, 3620, 4379, 5249, 8758, 10498, 17516, 20996, 21895, 26245, 27331, 43790, 52490, 54662, 87580, 104980, 109324, 136655, 273310, 546620, 792599, 1585198, 3170396, 3962995, 7925990, 15851980]

約数ペア:

[(1, 15851980), (2, 7925990), (4, 3962995), (5, 3170396), (10, 1585198), (20, 792599), (29, 546620), (58, 273310), (116, 136655), (145, 109324), (151, 104980), (181, 87580), (290, 54662), (302, 52490), (362, 43790), (580, 27331), (604, 26245), (724, 21895), (755, 20996), (905, 17516), (1510, 10498), (1810, 8758), (3020, 5249), (3620, 4379)]