20287830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{15727}}^1$

素因数の和:15780

約数の個数: 32

約数和(自身を含む): 49826304

約数和(自身を除く): 29538474

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290, 15727, 31454, 47181, 78635, 94362, 157270, 235905, 471810, 676261, 1352522, 2028783, 3381305, 4057566, 6762610, 10143915, 20287830]

約数ペア:

[(1, 20287830), (2, 10143915), (3, 6762610), (5, 4057566), (6, 3381305), (10, 2028783), (15, 1352522), (30, 676261), (43, 471810), (86, 235905), (129, 157270), (215, 94362), (258, 78635), (430, 47181), (645, 31454), (1290, 15727)]