20986472

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{373}}^1\times {\mathrm{541}}^1$

素因数の和:933

約数の個数: 32

約数和(自身を含む): 42568680

約数和(自身を除く): 21582208

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 373, 541, 746, 1082, 1492, 2164, 2984, 4328, 4849, 7033, 9698, 14066, 19396, 28132, 38792, 56264, 201793, 403586, 807172, 1614344, 2623309, 5246618, 10493236, 20986472]

約数ペア:

[(1, 20986472), (2, 10493236), (4, 5246618), (8, 2623309), (13, 1614344), (26, 807172), (52, 403586), (104, 201793), (373, 56264), (541, 38792), (746, 28132), (1082, 19396), (1492, 14066), (2164, 9698), (2984, 7033), (4328, 4849)]