21996640

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{8087}}^1$

素因数の和:8119

約数の個数: 48

約数和(自身を含む): 55030752

約数和(自身を除く): 33034112

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 8087, 16174, 32348, 40435, 64696, 80870, 129392, 137479, 161740, 258784, 274958, 323480, 549916, 646960, 687395, 1099832, 1293920, 1374790, 2199664, 2749580, 4399328, 5499160, 10998320, 21996640]

約数ペア:

[(1, 21996640), (2, 10998320), (4, 5499160), (5, 4399328), (8, 2749580), (10, 2199664), (16, 1374790), (17, 1293920), (20, 1099832), (32, 687395), (34, 646960), (40, 549916), (68, 323480), (80, 274958), (85, 258784), (136, 161740), (160, 137479), (170, 129392), (272, 80870), (340, 64696), (544, 40435), (680, 32348), (1360, 16174), (2720, 8087)]