28213880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41491}}^1$

素因数の和:41519

約数の個数: 32

約数和(自身を含む): 67217040

約数和(自身を除く): 39003160

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 41491, 82982, 165964, 207455, 331928, 414910, 705347, 829820, 1410694, 1659640, 2821388, 3526735, 5642776, 7053470, 14106940, 28213880]

約数ペア:

[(1, 28213880), (2, 14106940), (4, 7053470), (5, 5642776), (8, 3526735), (10, 2821388), (17, 1659640), (20, 1410694), (34, 829820), (40, 705347), (68, 414910), (85, 331928), (136, 207455), (170, 165964), (340, 82982), (680, 41491)]