20615700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{9817}}^1$

素因数の和:9841

約数の個数: 72

約数和(自身を含む): 68176192

約数和(自身を除く): 47560492

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 9817, 19634, 29451, 39268, 49085, 58902, 68719, 98170, 117804, 137438, 147255, 196340, 206157, 245425, 274876, 294510, 343595, 412314, 490850, 589020, 687190, 736275, 824628, 981700, 1030785, 1374380, 1472550, 1717975, 2061570, 2945100, 3435950, 4123140, 5153925, 6871900, 10307850, 20615700]

約数ペア:

[(1, 20615700), (2, 10307850), (3, 6871900), (4, 5153925), (5, 4123140), (6, 3435950), (7, 2945100), (10, 2061570), (12, 1717975), (14, 1472550), (15, 1374380), (20, 1030785), (21, 981700), (25, 824628), (28, 736275), (30, 687190), (35, 589020), (42, 490850), (50, 412314), (60, 343595), (70, 294510), (75, 274876), (84, 245425), (100, 206157), (105, 196340), (140, 147255), (150, 137438), (175, 117804), (210, 98170), (300, 68719), (350, 58902), (420, 49085), (525, 39268), (700, 29451), (1050, 19634), (2100, 9817)]