16578220

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{521}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 36656928

約数和(自身を除く): 20078708

約数列:

[1, 2, 4, 5, 10, 20, 37, 43, 74, 86, 148, 172, 185, 215, 370, 430, 521, 740, 860, 1042, 1591, 2084, 2605, 3182, 5210, 6364, 7955, 10420, 15910, 19277, 22403, 31820, 38554, 44806, 77108, 89612, 96385, 112015, 192770, 224030, 385540, 448060, 828911, 1657822, 3315644, 4144555, 8289110, 16578220]

約数ペア:

[(1, 16578220), (2, 8289110), (4, 4144555), (5, 3315644), (10, 1657822), (20, 828911), (37, 448060), (43, 385540), (74, 224030), (86, 192770), (148, 112015), (172, 96385), (185, 89612), (215, 77108), (370, 44806), (430, 38554), (521, 31820), (740, 22403), (860, 19277), (1042, 15910), (1591, 10420), (2084, 7955), (2605, 6364), (3182, 5210)]