20077425

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1$

素因数の和:243

約数の個数: 72

約数和(自身を含む): 39606840

約数和(自身を除く): 19529415

約数列:

[1, 3, 5, 9, 15, 17, 25, 29, 45, 51, 75, 85, 87, 145, 153, 181, 225, 255, 261, 425, 435, 493, 543, 725, 765, 905, 1275, 1305, 1479, 1629, 2175, 2465, 2715, 3077, 3825, 4437, 4525, 5249, 6525, 7395, 8145, 9231, 12325, 13575, 15385, 15747, 22185, 26245, 27693, 36975, 40725, 46155, 47241, 76925, 78735, 89233, 110925, 131225, 138465, 230775, 236205, 267699, 393675, 446165, 692325, 803097, 1181025, 1338495, 2230825, 4015485, 6692475, 20077425]

約数ペア:

[(1, 20077425), (3, 6692475), (5, 4015485), (9, 2230825), (15, 1338495), (17, 1181025), (25, 803097), (29, 692325), (45, 446165), (51, 393675), (75, 267699), (85, 236205), (87, 230775), (145, 138465), (153, 131225), (181, 110925), (225, 89233), (255, 78735), (261, 76925), (425, 47241), (435, 46155), (493, 40725), (543, 36975), (725, 27693), (765, 26245), (905, 22185), (1275, 15747), (1305, 15385), (1479, 13575), (1629, 12325), (2175, 9231), (2465, 8145), (2715, 7395), (3077, 6525), (3825, 5249), (4437, 4525)]