20973510

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{587}}^1$

素因数の和:997

約数の個数: 48

約数和(自身を含む): 54761616

約数和(自身を除く): 33788106

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 397, 587, 794, 1174, 1191, 1761, 1985, 2382, 2935, 3522, 3573, 3970, 5283, 5870, 5955, 7146, 8805, 10566, 11910, 17610, 17865, 26415, 35730, 52830, 233039, 466078, 699117, 1165195, 1398234, 2097351, 2330390, 3495585, 4194702, 6991170, 10486755, 20973510]

約数ペア:

[(1, 20973510), (2, 10486755), (3, 6991170), (5, 4194702), (6, 3495585), (9, 2330390), (10, 2097351), (15, 1398234), (18, 1165195), (30, 699117), (45, 466078), (90, 233039), (397, 52830), (587, 35730), (794, 26415), (1174, 17865), (1191, 17610), (1761, 11910), (1985, 10566), (2382, 8805), (2935, 7146), (3522, 5955), (3573, 5870), (3970, 5283)]