20393438

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:141

約数の個数: 64

約数和(自身を含む): 37920960

約数和(自身を除く): 17527522

約数列:

[1, 2, 13, 17, 26, 29, 34, 37, 43, 58, 74, 86, 221, 377, 442, 481, 493, 559, 629, 731, 754, 962, 986, 1073, 1118, 1247, 1258, 1462, 1591, 2146, 2494, 3182, 6409, 8177, 9503, 12818, 13949, 16211, 16354, 18241, 19006, 20683, 21199, 27047, 27898, 32422, 36482, 41366, 42398, 46139, 54094, 92278, 237133, 275587, 351611, 474266, 551174, 599807, 703222, 784363, 1199614, 1568726, 10196719, 20393438]

約数ペア:

[(1, 20393438), (2, 10196719), (13, 1568726), (17, 1199614), (26, 784363), (29, 703222), (34, 599807), (37, 551174), (43, 474266), (58, 351611), (74, 275587), (86, 237133), (221, 92278), (377, 54094), (442, 46139), (481, 42398), (493, 41366), (559, 36482), (629, 32422), (731, 27898), (754, 27047), (962, 21199), (986, 20683), (1073, 19006), (1118, 18241), (1247, 16354), (1258, 16211), (1462, 13949), (1591, 12818), (2146, 9503), (2494, 8177), (3182, 6409)]