21581796

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{919}}^1$

素因数の和:1048

約数の個数: 48

約数和(自身を含む): 53580800

約数和(自身を除く): 31999004

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 103, 114, 206, 228, 309, 412, 618, 919, 1236, 1838, 1957, 2757, 3676, 3914, 5514, 5871, 7828, 11028, 11742, 17461, 23484, 34922, 52383, 69844, 94657, 104766, 189314, 209532, 283971, 378628, 567942, 1135884, 1798483, 3596966, 5395449, 7193932, 10790898, 21581796]

約数ペア:

[(1, 21581796), (2, 10790898), (3, 7193932), (4, 5395449), (6, 3596966), (12, 1798483), (19, 1135884), (38, 567942), (57, 378628), (76, 283971), (103, 209532), (114, 189314), (206, 104766), (228, 94657), (309, 69844), (412, 52383), (618, 34922), (919, 23484), (1236, 17461), (1838, 11742), (1957, 11028), (2757, 7828), (3676, 5871), (3914, 5514)]