879660020

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1\times {\mathrm{2621}}^1$

素因数の和:2900

約数の個数: 48

約数和(自身を含む): 1877834448

約数和(自身を除く): 998174428

約数列:

[1, 2, 4, 5, 10, 20, 97, 173, 194, 346, 388, 485, 692, 865, 970, 1730, 1940, 2621, 3460, 5242, 10484, 13105, 16781, 26210, 33562, 52420, 67124, 83905, 167810, 254237, 335620, 453433, 508474, 906866, 1016948, 1271185, 1813732, 2267165, 2542370, 4534330, 5084740, 9068660, 43983001, 87966002, 175932004, 219915005, 439830010, 879660020]

約数ペア:

[(1, 879660020), (2, 439830010), (4, 219915005), (5, 175932004), (10, 87966002), (20, 43983001), (97, 9068660), (173, 5084740), (194, 4534330), (346, 2542370), (388, 2267165), (485, 1813732), (692, 1271185), (865, 1016948), (970, 906866), (1730, 508474), (1940, 453433), (2621, 335620), (3460, 254237), (5242, 167810), (10484, 83905), (13105, 67124), (16781, 52420), (26210, 33562)]