21372080

素因数分解:

$2^4\times 5^1\times {\mathrm{463}}^1\times {\mathrm{577}}^1$

素因数の和:1053

約数の個数: 40

約数和(自身を含む): 49883712

約数和(自身を除く): 28511632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 463, 577, 926, 1154, 1852, 2308, 2315, 2885, 3704, 4616, 4630, 5770, 7408, 9232, 9260, 11540, 18520, 23080, 37040, 46160, 267151, 534302, 1068604, 1335755, 2137208, 2671510, 4274416, 5343020, 10686040, 21372080]

約数ペア:

[(1, 21372080), (2, 10686040), (4, 5343020), (5, 4274416), (8, 2671510), (10, 2137208), (16, 1335755), (20, 1068604), (40, 534302), (80, 267151), (463, 46160), (577, 37040), (926, 23080), (1154, 18520), (1852, 11540), (2308, 9260), (2315, 9232), (2885, 7408), (3704, 5770), (4616, 4630)]