20867812

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 43319808

約数和(自身を除く): 22451996

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 101, 157, 188, 202, 314, 329, 404, 628, 658, 707, 1099, 1316, 1414, 2198, 2828, 4396, 4747, 7379, 9494, 14758, 15857, 18988, 29516, 31714, 33229, 51653, 63428, 66458, 103306, 110999, 132916, 206612, 221998, 443996, 745279, 1490558, 2981116, 5216953, 10433906, 20867812]

約数ペア:

[(1, 20867812), (2, 10433906), (4, 5216953), (7, 2981116), (14, 1490558), (28, 745279), (47, 443996), (94, 221998), (101, 206612), (157, 132916), (188, 110999), (202, 103306), (314, 66458), (329, 63428), (404, 51653), (628, 33229), (658, 31714), (707, 29516), (1099, 18988), (1316, 15857), (1414, 14758), (2198, 9494), (2828, 7379), (4396, 4747)]