20387988

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{727}}^1$

素因数の和:797

約数の個数: 72

約数和(自身を含む): 55648320

約数和(自身を除く): 35260332

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 41, 57, 76, 82, 114, 123, 164, 171, 228, 246, 342, 369, 492, 684, 727, 738, 779, 1454, 1476, 1558, 2181, 2337, 2908, 3116, 4362, 4674, 6543, 7011, 8724, 9348, 13086, 13813, 14022, 26172, 27626, 28044, 29807, 41439, 55252, 59614, 82878, 89421, 119228, 124317, 165756, 178842, 248634, 268263, 357684, 497268, 536526, 566333, 1073052, 1132666, 1698999, 2265332, 3397998, 5096997, 6795996, 10193994, 20387988]

約数ペア:

[(1, 20387988), (2, 10193994), (3, 6795996), (4, 5096997), (6, 3397998), (9, 2265332), (12, 1698999), (18, 1132666), (19, 1073052), (36, 566333), (38, 536526), (41, 497268), (57, 357684), (76, 268263), (82, 248634), (114, 178842), (123, 165756), (164, 124317), (171, 119228), (228, 89421), (246, 82878), (342, 59614), (369, 55252), (492, 41439), (684, 29807), (727, 28044), (738, 27626), (779, 26172), (1454, 14022), (1476, 13813), (1558, 13086), (2181, 9348), (2337, 8724), (2908, 7011), (3116, 6543), (4362, 4674)]