21639810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{281}}^1$

素因数の和:459

約数の個数: 64

約数和(自身を含む): 55551744

約数和(自身を除く): 33911934

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 51, 85, 102, 151, 170, 255, 281, 302, 453, 510, 562, 755, 843, 906, 1405, 1510, 1686, 2265, 2567, 2810, 4215, 4530, 4777, 5134, 7701, 8430, 9554, 12835, 14331, 15402, 23885, 25670, 28662, 38505, 42431, 47770, 71655, 77010, 84862, 127293, 143310, 212155, 254586, 424310, 636465, 721327, 1272930, 1442654, 2163981, 3606635, 4327962, 7213270, 10819905, 21639810]

約数ペア:

[(1, 21639810), (2, 10819905), (3, 7213270), (5, 4327962), (6, 3606635), (10, 2163981), (15, 1442654), (17, 1272930), (30, 721327), (34, 636465), (51, 424310), (85, 254586), (102, 212155), (151, 143310), (170, 127293), (255, 84862), (281, 77010), (302, 71655), (453, 47770), (510, 42431), (562, 38505), (755, 28662), (843, 25670), (906, 23885), (1405, 15402), (1510, 14331), (1686, 12835), (2265, 9554), (2567, 8430), (2810, 7701), (4215, 5134), (4530, 4777)]