201977780

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{99989}}^1$

素因数の和:100099

約数の個数: 24

約数和(自身を含む): 428357160

約数和(自身を除く): 226379380

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 99989, 199978, 399956, 499945, 999890, 1999780, 10098889, 20197778, 40395556, 50494445, 100988890, 201977780]

約数ペア:

[(1, 201977780), (2, 100988890), (4, 50494445), (5, 40395556), (10, 20197778), (20, 10098889), (101, 1999780), (202, 999890), (404, 499945), (505, 399956), (1010, 199978), (2020, 99989)]