81642160

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{347}}^1$

素因数の和:550

約数の個数: 80

約数和(自身を含む): 202728096

約数和(自身を除く): 121085936

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 173, 272, 340, 346, 347, 680, 692, 694, 865, 1360, 1384, 1388, 1730, 1735, 2768, 2776, 2941, 3460, 3470, 5552, 5882, 5899, 6920, 6940, 11764, 11798, 13840, 13880, 14705, 23528, 23596, 27760, 29410, 29495, 47056, 47192, 58820, 58990, 60031, 94384, 117640, 117980, 120062, 235280, 235960, 240124, 300155, 471920, 480248, 600310, 960496, 1020527, 1200620, 2041054, 2401240, 4082108, 4802480, 5102635, 8164216, 10205270, 16328432, 20410540, 40821080, 81642160]

約数ペア:

[(1, 81642160), (2, 40821080), (4, 20410540), (5, 16328432), (8, 10205270), (10, 8164216), (16, 5102635), (17, 4802480), (20, 4082108), (34, 2401240), (40, 2041054), (68, 1200620), (80, 1020527), (85, 960496), (136, 600310), (170, 480248), (173, 471920), (272, 300155), (340, 240124), (346, 235960), (347, 235280), (680, 120062), (692, 117980), (694, 117640), (865, 94384), (1360, 60031), (1384, 58990), (1388, 58820), (1730, 47192), (1735, 47056), (2768, 29495), (2776, 29410), (2941, 27760), (3460, 23596), (3470, 23528), (5552, 14705), (5882, 13880), (5899, 13840), (6920, 11798), (6940, 11764)]