21402524

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:147

約数の個数: 96

約数和(自身を含む): 48771072

約数和(自身を除く): 27368548

約数列:

[1, 2, 4, 11, 13, 17, 22, 26, 31, 34, 44, 52, 62, 68, 71, 124, 142, 143, 187, 221, 284, 286, 341, 374, 403, 442, 527, 572, 682, 748, 781, 806, 884, 923, 1054, 1207, 1364, 1562, 1612, 1846, 2108, 2201, 2414, 2431, 3124, 3692, 4402, 4433, 4828, 4862, 5797, 6851, 8804, 8866, 9724, 10153, 11594, 13277, 13702, 15691, 17732, 20306, 23188, 24211, 26554, 27404, 28613, 31382, 37417, 40612, 48422, 53108, 57226, 62764, 74834, 75361, 96844, 114452, 149668, 150722, 172601, 301444, 314743, 345202, 411587, 486421, 629486, 690404, 823174, 972842, 1258972, 1646348, 1945684, 5350631, 10701262, 21402524]

約数ペア:

[(1, 21402524), (2, 10701262), (4, 5350631), (11, 1945684), (13, 1646348), (17, 1258972), (22, 972842), (26, 823174), (31, 690404), (34, 629486), (44, 486421), (52, 411587), (62, 345202), (68, 314743), (71, 301444), (124, 172601), (142, 150722), (143, 149668), (187, 114452), (221, 96844), (284, 75361), (286, 74834), (341, 62764), (374, 57226), (403, 53108), (442, 48422), (527, 40612), (572, 37417), (682, 31382), (748, 28613), (781, 27404), (806, 26554), (884, 24211), (923, 23188), (1054, 20306), (1207, 17732), (1364, 15691), (1562, 13702), (1612, 13277), (1846, 11594), (2108, 10153), (2201, 9724), (2414, 8866), (2431, 8804), (3124, 6851), (3692, 5797), (4402, 4862), (4433, 4828)]