20359450

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{739}}^1$

素因数の和:799

約数の個数: 48

約数和(自身を含む): 41292000

約数和(自身を除く): 20932550

約数列:

[1, 2, 5, 10, 19, 25, 29, 38, 50, 58, 95, 145, 190, 290, 475, 551, 725, 739, 950, 1102, 1450, 1478, 2755, 3695, 5510, 7390, 13775, 14041, 18475, 21431, 27550, 28082, 36950, 42862, 70205, 107155, 140410, 214310, 351025, 407189, 535775, 702050, 814378, 1071550, 2035945, 4071890, 10179725, 20359450]

約数ペア:

[(1, 20359450), (2, 10179725), (5, 4071890), (10, 2035945), (19, 1071550), (25, 814378), (29, 702050), (38, 535775), (50, 407189), (58, 351025), (95, 214310), (145, 140410), (190, 107155), (290, 70205), (475, 42862), (551, 36950), (725, 28082), (739, 27550), (950, 21431), (1102, 18475), (1450, 14041), (1478, 13775), (2755, 7390), (3695, 5510)]