20490032

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1061}}^1$

素因数の和:1157

約数の個数: 40

約数和(自身を含む): 42666912

約数和(自身を除く): 22176880

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 71, 136, 142, 272, 284, 568, 1061, 1136, 1207, 2122, 2414, 4244, 4828, 8488, 9656, 16976, 18037, 19312, 36074, 72148, 75331, 144296, 150662, 288592, 301324, 602648, 1205296, 1280627, 2561254, 5122508, 10245016, 20490032]

約数ペア:

[(1, 20490032), (2, 10245016), (4, 5122508), (8, 2561254), (16, 1280627), (17, 1205296), (34, 602648), (68, 301324), (71, 288592), (136, 150662), (142, 144296), (272, 75331), (284, 72148), (568, 36074), (1061, 19312), (1136, 18037), (1207, 16976), (2122, 9656), (2414, 8488), (4244, 4828)]