20790930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:351

約数の個数: 64

約数和(自身を含む): 52005888

約数和(自身を除く): 31214958

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 71, 86, 129, 142, 213, 215, 227, 258, 355, 426, 430, 454, 645, 681, 710, 1065, 1135, 1290, 1362, 2130, 2270, 3053, 3405, 6106, 6810, 9159, 9761, 15265, 16117, 18318, 19522, 29283, 30530, 32234, 45795, 48351, 48805, 58566, 80585, 91590, 96702, 97610, 146415, 161170, 241755, 292830, 483510, 693031, 1386062, 2079093, 3465155, 4158186, 6930310, 10395465, 20790930]

約数ペア:

[(1, 20790930), (2, 10395465), (3, 6930310), (5, 4158186), (6, 3465155), (10, 2079093), (15, 1386062), (30, 693031), (43, 483510), (71, 292830), (86, 241755), (129, 161170), (142, 146415), (213, 97610), (215, 96702), (227, 91590), (258, 80585), (355, 58566), (426, 48805), (430, 48351), (454, 45795), (645, 32234), (681, 30530), (710, 29283), (1065, 19522), (1135, 18318), (1290, 16117), (1362, 15265), (2130, 9761), (2270, 9159), (3053, 6810), (3405, 6106)]