21768180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51829}}^1$

素因数の和:51848

約数の個数: 48

約数和(自身を含む): 69659520

約数和(自身を除く): 47891340

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, 51829, 103658, 155487, 207316, 259145, 310974, 362803, 518290, 621948, 725606, 777435, 1036580, 1088409, 1451212, 1554870, 1814015, 2176818, 3109740, 3628030, 4353636, 5442045, 7256060, 10884090, 21768180]

約数ペア:

[(1, 21768180), (2, 10884090), (3, 7256060), (4, 5442045), (5, 4353636), (6, 3628030), (7, 3109740), (10, 2176818), (12, 1814015), (14, 1554870), (15, 1451212), (20, 1088409), (21, 1036580), (28, 777435), (30, 725606), (35, 621948), (42, 518290), (60, 362803), (70, 310974), (84, 259145), (105, 207316), (140, 155487), (210, 103658), (420, 51829)]