28219480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{17207}}^1$

素因数の和:17259

約数の個数: 32

約数和(自身を含む): 65046240

約数和(自身を除く): 36826760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 17207, 34414, 68828, 86035, 137656, 172070, 344140, 688280, 705487, 1410974, 2821948, 3527435, 5643896, 7054870, 14109740, 28219480]

約数ペア:

[(1, 28219480), (2, 14109740), (4, 7054870), (5, 5643896), (8, 3527435), (10, 2821948), (20, 1410974), (40, 705487), (41, 688280), (82, 344140), (164, 172070), (205, 137656), (328, 86035), (410, 68828), (820, 34414), (1640, 17207)]