20969620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1483}}^1$

素因数の和:1600

約数の個数: 48

約数和(自身を含む): 50859648

約数和(自身を除く): 29890028

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 101, 140, 202, 404, 505, 707, 1010, 1414, 1483, 2020, 2828, 2966, 3535, 5932, 7070, 7415, 10381, 14140, 14830, 20762, 29660, 41524, 51905, 103810, 149783, 207620, 299566, 599132, 748915, 1048481, 1497830, 2096962, 2995660, 4193924, 5242405, 10484810, 20969620]

約数ペア:

[(1, 20969620), (2, 10484810), (4, 5242405), (5, 4193924), (7, 2995660), (10, 2096962), (14, 1497830), (20, 1048481), (28, 748915), (35, 599132), (70, 299566), (101, 207620), (140, 149783), (202, 103810), (404, 51905), (505, 41524), (707, 29660), (1010, 20762), (1414, 14830), (1483, 14140), (2020, 10381), (2828, 7415), (2966, 7070), (3535, 5932)]