20796848

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{487}}^1$

素因数の和:669

約数の個数: 40

約数和(自身を含む): 43024032

約数和(自身を除く): 22227184

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 157, 272, 314, 487, 628, 974, 1256, 1948, 2512, 2669, 3896, 5338, 7792, 8279, 10676, 16558, 21352, 33116, 42704, 66232, 76459, 132464, 152918, 305836, 611672, 1223344, 1299803, 2599606, 5199212, 10398424, 20796848]

約数ペア:

[(1, 20796848), (2, 10398424), (4, 5199212), (8, 2599606), (16, 1299803), (17, 1223344), (34, 611672), (68, 305836), (136, 152918), (157, 132464), (272, 76459), (314, 66232), (487, 42704), (628, 33116), (974, 21352), (1256, 16558), (1948, 10676), (2512, 8279), (2669, 7792), (3896, 5338)]