89405980

素因数分解:

$2^2\times 5^1\times {\mathrm{1993}}^1\times {\mathrm{2243}}^1$

素因数の和:4245

約数の個数: 24

約数和(自身を含む): 187930512

約数和(自身を除く): 98524532

約数列:

[1, 2, 4, 5, 10, 20, 1993, 2243, 3986, 4486, 7972, 8972, 9965, 11215, 19930, 22430, 39860, 44860, 4470299, 8940598, 17881196, 22351495, 44702990, 89405980]

約数ペア:

[(1, 89405980), (2, 44702990), (4, 22351495), (5, 17881196), (10, 8940598), (20, 4470299), (1993, 44860), (2243, 39860), (3986, 22430), (4486, 19930), (7972, 11215), (8972, 9965)]