138678680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{523}}^1\times {\mathrm{947}}^1$

素因数の和:1488

約数の個数: 64

約数和(自身を含む): 357661440

約数和(自身を除く): 218982760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 523, 947, 1046, 1894, 2092, 2615, 3661, 3788, 4184, 4735, 5230, 6629, 7322, 7576, 9470, 10460, 13258, 14644, 18305, 18940, 20920, 26516, 29288, 33145, 36610, 37880, 53032, 66290, 73220, 132580, 146440, 265160, 495281, 990562, 1981124, 2476405, 3466967, 3962248, 4952810, 6933934, 9905620, 13867868, 17334835, 19811240, 27735736, 34669670, 69339340, 138678680]

約数ペア:

[(1, 138678680), (2, 69339340), (4, 34669670), (5, 27735736), (7, 19811240), (8, 17334835), (10, 13867868), (14, 9905620), (20, 6933934), (28, 4952810), (35, 3962248), (40, 3466967), (56, 2476405), (70, 1981124), (140, 990562), (280, 495281), (523, 265160), (947, 146440), (1046, 132580), (1894, 73220), (2092, 66290), (2615, 53032), (3661, 37880), (3788, 36610), (4184, 33145), (4735, 29288), (5230, 26516), (6629, 20920), (7322, 18940), (7576, 18305), (9470, 14644), (10460, 13258)]