20657530

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1\times {\mathrm{181}}^1$

素因数の和:402

約数の個数: 32

約数和(自身を含む): 38093328

約数和(自身を除く): 17435798

約数列:

[1, 2, 5, 10, 101, 113, 181, 202, 226, 362, 505, 565, 905, 1010, 1130, 1810, 11413, 18281, 20453, 22826, 36562, 40906, 57065, 91405, 102265, 114130, 182810, 204530, 2065753, 4131506, 10328765, 20657530]

約数ペア:

[(1, 20657530), (2, 10328765), (5, 4131506), (10, 2065753), (101, 204530), (113, 182810), (181, 114130), (202, 102265), (226, 91405), (362, 57065), (505, 40906), (565, 36562), (905, 22826), (1010, 20453), (1130, 18281), (1810, 11413)]