21070760

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{619}}^1$

素因数の和:690

約数の個数: 64

約数和(自身を含む): 50889600

約数和(自身を除く): 29818840

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 37, 40, 46, 74, 92, 115, 148, 184, 185, 230, 296, 370, 460, 619, 740, 851, 920, 1238, 1480, 1702, 2476, 3095, 3404, 4255, 4952, 6190, 6808, 8510, 12380, 14237, 17020, 22903, 24760, 28474, 34040, 45806, 56948, 71185, 91612, 113896, 114515, 142370, 183224, 229030, 284740, 458060, 526769, 569480, 916120, 1053538, 2107076, 2633845, 4214152, 5267690, 10535380, 21070760]

約数ペア:

[(1, 21070760), (2, 10535380), (4, 5267690), (5, 4214152), (8, 2633845), (10, 2107076), (20, 1053538), (23, 916120), (37, 569480), (40, 526769), (46, 458060), (74, 284740), (92, 229030), (115, 183224), (148, 142370), (184, 114515), (185, 113896), (230, 91612), (296, 71185), (370, 56948), (460, 45806), (619, 34040), (740, 28474), (851, 24760), (920, 22903), (1238, 17020), (1480, 14237), (1702, 12380), (2476, 8510), (3095, 6808), (3404, 6190), (4255, 4952)]