20992144

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1087}}^1$

素因数の和:1183

約数の個数: 40

約数和(自身を含む): 43711488

約数和(自身を除く): 22719344

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 71, 136, 142, 272, 284, 568, 1087, 1136, 1207, 2174, 2414, 4348, 4828, 8696, 9656, 17392, 18479, 19312, 36958, 73916, 77177, 147832, 154354, 295664, 308708, 617416, 1234832, 1312009, 2624018, 5248036, 10496072, 20992144]

約数ペア:

[(1, 20992144), (2, 10496072), (4, 5248036), (8, 2624018), (16, 1312009), (17, 1234832), (34, 617416), (68, 308708), (71, 295664), (136, 154354), (142, 147832), (272, 77177), (284, 73916), (568, 36958), (1087, 19312), (1136, 18479), (1207, 17392), (2174, 9656), (2414, 8696), (4348, 4828)]