21380488

素因数分解:

$2^3\times {\mathrm{47}}^1\times {\mathrm{101}}^1\times {\mathrm{563}}^1$

素因数の和:717

約数の個数: 32

約数和(自身を含む): 41420160

約数和(自身を除く): 20039672

約数列:

[1, 2, 4, 8, 47, 94, 101, 188, 202, 376, 404, 563, 808, 1126, 2252, 4504, 4747, 9494, 18988, 26461, 37976, 52922, 56863, 105844, 113726, 211688, 227452, 454904, 2672561, 5345122, 10690244, 21380488]

約数ペア:

[(1, 21380488), (2, 10690244), (4, 5345122), (8, 2672561), (47, 454904), (94, 227452), (101, 211688), (188, 113726), (202, 105844), (376, 56863), (404, 52922), (563, 37976), (808, 26461), (1126, 18988), (2252, 9494), (4504, 4747)]