863400520

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{213713}}^1$

素因数の和:213825

約数の個数: 32

約数和(自身を含む): 1961894520

約数和(自身を除く): 1098494000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 213713, 427426, 854852, 1068565, 1709704, 2137130, 4274260, 8548520, 21585013, 43170026, 86340052, 107925065, 172680104, 215850130, 431700260, 863400520]

約数ペア:

[(1, 863400520), (2, 431700260), (4, 215850130), (5, 172680104), (8, 107925065), (10, 86340052), (20, 43170026), (40, 21585013), (101, 8548520), (202, 4274260), (404, 2137130), (505, 1709704), (808, 1068565), (1010, 854852), (2020, 427426), (4040, 213713)]