20868660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{607}}^1$

素因数の和:813

約数の個数: 72

約数和(自身を含む): 63737856

約数和(自身を除く): 42869196

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 191, 382, 573, 607, 764, 955, 1146, 1214, 1719, 1821, 1910, 2292, 2428, 2865, 3035, 3438, 3642, 3820, 5463, 5730, 6070, 6876, 7284, 8595, 9105, 10926, 11460, 12140, 17190, 18210, 21852, 27315, 34380, 36420, 54630, 109260, 115937, 231874, 347811, 463748, 579685, 695622, 1043433, 1159370, 1391244, 1739055, 2086866, 2318740, 3478110, 4173732, 5217165, 6956220, 10434330, 20868660]

約数ペア:

[(1, 20868660), (2, 10434330), (3, 6956220), (4, 5217165), (5, 4173732), (6, 3478110), (9, 2318740), (10, 2086866), (12, 1739055), (15, 1391244), (18, 1159370), (20, 1043433), (30, 695622), (36, 579685), (45, 463748), (60, 347811), (90, 231874), (180, 115937), (191, 109260), (382, 54630), (573, 36420), (607, 34380), (764, 27315), (955, 21852), (1146, 18210), (1214, 17190), (1719, 12140), (1821, 11460), (1910, 10926), (2292, 9105), (2428, 8595), (2865, 7284), (3035, 6876), (3438, 6070), (3642, 5730), (3820, 5463)]