20022520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1663}}^1$

素因数の和:1724

約数の個数: 64

約数和(自身を含む): 52715520

約数和(自身を除く): 32693000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 56, 70, 86, 140, 172, 215, 280, 301, 344, 430, 602, 860, 1204, 1505, 1663, 1720, 2408, 3010, 3326, 6020, 6652, 8315, 11641, 12040, 13304, 16630, 23282, 33260, 46564, 58205, 66520, 71509, 93128, 116410, 143018, 232820, 286036, 357545, 465640, 500563, 572072, 715090, 1001126, 1430180, 2002252, 2502815, 2860360, 4004504, 5005630, 10011260, 20022520]

約数ペア:

[(1, 20022520), (2, 10011260), (4, 5005630), (5, 4004504), (7, 2860360), (8, 2502815), (10, 2002252), (14, 1430180), (20, 1001126), (28, 715090), (35, 572072), (40, 500563), (43, 465640), (56, 357545), (70, 286036), (86, 232820), (140, 143018), (172, 116410), (215, 93128), (280, 71509), (301, 66520), (344, 58205), (430, 46564), (602, 33260), (860, 23282), (1204, 16630), (1505, 13304), (1663, 12040), (1720, 11641), (2408, 8315), (3010, 6652), (3326, 6020)]