20714180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^3\times {\mathrm{151}}^1$

素因数の和:217

約数の個数: 48

約数和(自身を含む): 46220160

約数和(自身を除く): 25505980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 151, 190, 302, 361, 380, 604, 722, 755, 1444, 1510, 1805, 2869, 3020, 3610, 5738, 6859, 7220, 11476, 13718, 14345, 27436, 28690, 34295, 54511, 57380, 68590, 109022, 137180, 218044, 272555, 545110, 1035709, 1090220, 2071418, 4142836, 5178545, 10357090, 20714180]

約数ペア:

[(1, 20714180), (2, 10357090), (4, 5178545), (5, 4142836), (10, 2071418), (19, 1090220), (20, 1035709), (38, 545110), (76, 272555), (95, 218044), (151, 137180), (190, 109022), (302, 68590), (361, 57380), (380, 54511), (604, 34295), (722, 28690), (755, 27436), (1444, 14345), (1510, 13718), (1805, 11476), (2869, 7220), (3020, 6859), (3610, 5738)]