217615020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{518131}}^1$

素因数の和:518150

約数の個数: 48

約数和(自身を含む): 696369408

約数和(自身を除く): 478754388

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 518131, 1036262, 1554393, 2072524, 2590655, 3108786, 3626917, 5181310, 6217572, 7253834, 7771965, 10362620, 10880751, 14507668, 15543930, 18134585, 21761502, 31087860, 36269170, 43523004, 54403755, 72538340, 108807510, 217615020]

約数ペア:

[(1, 217615020), (2, 108807510), (3, 72538340), (4, 54403755), (5, 43523004), (6, 36269170), (7, 31087860), (10, 21761502), (12, 18134585), (14, 15543930), (15, 14507668), (20, 10880751), (21, 10362620), (28, 7771965), (30, 7253834), (35, 6217572), (42, 5181310), (60, 3626917), (70, 3108786), (84, 2590655), (105, 2072524), (140, 1554393), (210, 1036262), (420, 518131)]