21524220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{607}}^1$

素因数の和:819

約数の個数: 72

約数和(自身を含む): 65729664

約数和(自身を除く): 44205444

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 197, 394, 591, 607, 788, 985, 1182, 1214, 1773, 1821, 1970, 2364, 2428, 2955, 3035, 3546, 3642, 3940, 5463, 5910, 6070, 7092, 7284, 8865, 9105, 10926, 11820, 12140, 17730, 18210, 21852, 27315, 35460, 36420, 54630, 109260, 119579, 239158, 358737, 478316, 597895, 717474, 1076211, 1195790, 1434948, 1793685, 2152422, 2391580, 3587370, 4304844, 5381055, 7174740, 10762110, 21524220]

約数ペア:

[(1, 21524220), (2, 10762110), (3, 7174740), (4, 5381055), (5, 4304844), (6, 3587370), (9, 2391580), (10, 2152422), (12, 1793685), (15, 1434948), (18, 1195790), (20, 1076211), (30, 717474), (36, 597895), (45, 478316), (60, 358737), (90, 239158), (180, 119579), (197, 109260), (394, 54630), (591, 36420), (607, 35460), (788, 27315), (985, 21852), (1182, 18210), (1214, 17730), (1773, 12140), (1821, 11820), (1970, 10926), (2364, 9105), (2428, 8865), (2955, 7284), (3035, 7092), (3546, 6070), (3642, 5910), (3940, 5463)]