21764030

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{487}}^1$

素因数の和:644

約数の個数: 32

約数和(自身を含む): 40582080

約数和(自身を除く): 18818050

約数列:

[1, 2, 5, 10, 41, 82, 109, 205, 218, 410, 487, 545, 974, 1090, 2435, 4469, 4870, 8938, 19967, 22345, 39934, 44690, 53083, 99835, 106166, 199670, 265415, 530830, 2176403, 4352806, 10882015, 21764030]

約数ペア:

[(1, 21764030), (2, 10882015), (5, 4352806), (10, 2176403), (41, 530830), (82, 265415), (109, 199670), (205, 106166), (218, 99835), (410, 53083), (487, 44690), (545, 39934), (974, 22345), (1090, 19967), (2435, 8938), (4469, 4870)]