129656840

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{25523}}^1$

素因数の和:25661

約数の個数: 32

約数和(自身を含む): 294036480

約数和(自身を除く): 164379640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 5080, 25523, 51046, 102092, 127615, 204184, 255230, 510460, 1020920, 3241421, 6482842, 12965684, 16207105, 25931368, 32414210, 64828420, 129656840]

約数ペア:

[(1, 129656840), (2, 64828420), (4, 32414210), (5, 25931368), (8, 16207105), (10, 12965684), (20, 6482842), (40, 3241421), (127, 1020920), (254, 510460), (508, 255230), (635, 204184), (1016, 127615), (1270, 102092), (2540, 51046), (5080, 25523)]