20228260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77801}}^1$

素因数の和:77823

約数の個数: 24

約数和(自身を含む): 45747576

約数和(自身を除く): 25519316

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77801, 155602, 311204, 389005, 778010, 1011413, 1556020, 2022826, 4045652, 5057065, 10114130, 20228260]

約数ペア:

[(1, 20228260), (2, 10114130), (4, 5057065), (5, 4045652), (10, 2022826), (13, 1556020), (20, 1011413), (26, 778010), (52, 389005), (65, 311204), (130, 155602), (260, 77801)]