20687100

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{9851}}^1$

素因数の和:9875

約数の個数: 72

約数和(自身を含む): 68412288

約数和(自身を除く): 47725188

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, 9851, 19702, 29553, 39404, 49255, 59106, 68957, 98510, 118212, 137914, 147765, 197020, 206871, 246275, 275828, 295530, 344785, 413742, 492550, 591060, 689570, 738825, 827484, 985100, 1034355, 1379140, 1477650, 1723925, 2068710, 2955300, 3447850, 4137420, 5171775, 6895700, 10343550, 20687100]

約数ペア:

[(1, 20687100), (2, 10343550), (3, 6895700), (4, 5171775), (5, 4137420), (6, 3447850), (7, 2955300), (10, 2068710), (12, 1723925), (14, 1477650), (15, 1379140), (20, 1034355), (21, 985100), (25, 827484), (28, 738825), (30, 689570), (35, 591060), (42, 492550), (50, 413742), (60, 344785), (70, 295530), (75, 275828), (84, 246275), (100, 206871), (105, 197020), (140, 147765), (150, 137914), (175, 118212), (210, 98510), (300, 68957), (350, 59106), (420, 49255), (525, 39404), (700, 29553), (1050, 19702), (2100, 9851)]