16945220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{181}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 37180416

約数和(自身を除く): 20235196

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 151, 155, 181, 302, 310, 362, 604, 620, 724, 755, 905, 1510, 1810, 3020, 3620, 4681, 5611, 9362, 11222, 18724, 22444, 23405, 27331, 28055, 46810, 54662, 56110, 93620, 109324, 112220, 136655, 273310, 546620, 847261, 1694522, 3389044, 4236305, 8472610, 16945220]

約数ペア:

[(1, 16945220), (2, 8472610), (4, 4236305), (5, 3389044), (10, 1694522), (20, 847261), (31, 546620), (62, 273310), (124, 136655), (151, 112220), (155, 109324), (181, 93620), (302, 56110), (310, 54662), (362, 46810), (604, 28055), (620, 27331), (724, 23405), (755, 22444), (905, 18724), (1510, 11222), (1810, 9362), (3020, 5611), (3620, 4681)]