21083876

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{397}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 43327872

約数和(自身を除く): 22243996

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 71, 142, 187, 284, 374, 397, 748, 781, 794, 1207, 1562, 1588, 2414, 3124, 4367, 4828, 6749, 8734, 13277, 13498, 17468, 26554, 26996, 28187, 53108, 56374, 74239, 112748, 148478, 296956, 310057, 479179, 620114, 958358, 1240228, 1916716, 5270969, 10541938, 21083876]

約数ペア:

[(1, 21083876), (2, 10541938), (4, 5270969), (11, 1916716), (17, 1240228), (22, 958358), (34, 620114), (44, 479179), (68, 310057), (71, 296956), (142, 148478), (187, 112748), (284, 74239), (374, 56374), (397, 53108), (748, 28187), (781, 26996), (794, 26554), (1207, 17468), (1562, 13498), (1588, 13277), (2414, 8734), (3124, 6749), (4367, 4828)]