18007020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1409}}^1$

素因数の和:1495

約数の個数: 72

約数和(自身を含む): 55429920

約数和(自身を除く): 37422900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1409, 1420, 2130, 2556, 2818, 3195, 4227, 4260, 5636, 6390, 7045, 8454, 12681, 12780, 14090, 16908, 21135, 25362, 28180, 42270, 50724, 63405, 84540, 100039, 126810, 200078, 253620, 300117, 400156, 500195, 600234, 900351, 1000390, 1200468, 1500585, 1800702, 2000780, 3001170, 3601404, 4501755, 6002340, 9003510, 18007020]

約数ペア:

[(1, 18007020), (2, 9003510), (3, 6002340), (4, 4501755), (5, 3601404), (6, 3001170), (9, 2000780), (10, 1800702), (12, 1500585), (15, 1200468), (18, 1000390), (20, 900351), (30, 600234), (36, 500195), (45, 400156), (60, 300117), (71, 253620), (90, 200078), (142, 126810), (180, 100039), (213, 84540), (284, 63405), (355, 50724), (426, 42270), (639, 28180), (710, 25362), (852, 21135), (1065, 16908), (1278, 14090), (1409, 12780), (1420, 12681), (2130, 8454), (2556, 7045), (2818, 6390), (3195, 5636), (4227, 4260)]