668855870

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{281}}^1$

素因数の和:521

約数の個数: 64

約数和(自身を含む): 1286461440

約数和(自身を除く): 617605570

約数列:

[1, 2, 5, 10, 23, 46, 79, 115, 131, 158, 230, 262, 281, 395, 562, 655, 790, 1310, 1405, 1817, 2810, 3013, 3634, 6026, 6463, 9085, 10349, 12926, 15065, 18170, 20698, 22199, 30130, 32315, 36811, 44398, 51745, 64630, 73622, 103490, 110995, 184055, 221990, 238027, 368110, 476054, 510577, 846653, 1021154, 1190135, 1693306, 2380270, 2552885, 2908069, 4233265, 5105770, 5816138, 8466530, 14540345, 29080690, 66885587, 133771174, 334427935, 668855870]

約数ペア:

[(1, 668855870), (2, 334427935), (5, 133771174), (10, 66885587), (23, 29080690), (46, 14540345), (79, 8466530), (115, 5816138), (131, 5105770), (158, 4233265), (230, 2908069), (262, 2552885), (281, 2380270), (395, 1693306), (562, 1190135), (655, 1021154), (790, 846653), (1310, 510577), (1405, 476054), (1817, 368110), (2810, 238027), (3013, 221990), (3634, 184055), (6026, 110995), (6463, 103490), (9085, 73622), (10349, 64630), (12926, 51745), (15065, 44398), (18170, 36811), (20698, 32315), (22199, 30130)]