31399480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{883}}^1$

素因数の和:1028

約数の個数: 64

約数和(自身を含む): 81469440

約数和(自身を除く): 50069960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 127, 140, 254, 280, 508, 635, 883, 889, 1016, 1270, 1766, 1778, 2540, 3532, 3556, 4415, 4445, 5080, 6181, 7064, 7112, 8830, 8890, 12362, 17660, 17780, 24724, 30905, 35320, 35560, 49448, 61810, 112141, 123620, 224282, 247240, 448564, 560705, 784987, 897128, 1121410, 1569974, 2242820, 3139948, 3924935, 4485640, 6279896, 7849870, 15699740, 31399480]

約数ペア:

[(1, 31399480), (2, 15699740), (4, 7849870), (5, 6279896), (7, 4485640), (8, 3924935), (10, 3139948), (14, 2242820), (20, 1569974), (28, 1121410), (35, 897128), (40, 784987), (56, 560705), (70, 448564), (127, 247240), (140, 224282), (254, 123620), (280, 112141), (508, 61810), (635, 49448), (883, 35560), (889, 35320), (1016, 30905), (1270, 24724), (1766, 17780), (1778, 17660), (2540, 12362), (3532, 8890), (3556, 8830), (4415, 7112), (4445, 7064), (5080, 6181)]