13157720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:236

約数の個数: 64

約数和(自身を含む): 31026240

約数和(自身を除く): 17868520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 71, 82, 113, 142, 164, 205, 226, 284, 328, 355, 410, 452, 565, 568, 710, 820, 904, 1130, 1420, 1640, 2260, 2840, 2911, 4520, 4633, 5822, 8023, 9266, 11644, 14555, 16046, 18532, 23165, 23288, 29110, 32092, 37064, 40115, 46330, 58220, 64184, 80230, 92660, 116440, 160460, 185320, 320920, 328943, 657886, 1315772, 1644715, 2631544, 3289430, 6578860, 13157720]

約数ペア:

[(1, 13157720), (2, 6578860), (4, 3289430), (5, 2631544), (8, 1644715), (10, 1315772), (20, 657886), (40, 328943), (41, 320920), (71, 185320), (82, 160460), (113, 116440), (142, 92660), (164, 80230), (205, 64184), (226, 58220), (284, 46330), (328, 40115), (355, 37064), (410, 32092), (452, 29110), (565, 23288), (568, 23165), (710, 18532), (820, 16046), (904, 14555), (1130, 11644), (1420, 9266), (1640, 8023), (2260, 5822), (2840, 4633), (2911, 4520)]