20921863208

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{2609}}^1\times {\mathrm{18913}}^1$

素因数の和:21581

約数の個数: 32

約数和(自身を含む): 39986087400

約数和(自身を除く): 19064224192

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 2609, 5218, 10436, 18913, 20872, 37826, 75652, 138277, 151304, 276554, 553108, 1002389, 1106216, 2004778, 4009556, 8019112, 49344017, 98688034, 197376068, 394752136, 2615232901, 5230465802, 10460931604, 20921863208]

約数ペア:

[(1, 20921863208), (2, 10460931604), (4, 5230465802), (8, 2615232901), (53, 394752136), (106, 197376068), (212, 98688034), (424, 49344017), (2609, 8019112), (5218, 4009556), (10436, 2004778), (18913, 1106216), (20872, 1002389), (37826, 553108), (75652, 276554), (138277, 151304)]