9900020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:165

約数の個数: 72

約数和(自身を含む): 23519160

約数和(自身を除く): 13619140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 101, 116, 130, 145, 169, 202, 260, 290, 338, 377, 404, 505, 580, 676, 754, 845, 1010, 1313, 1508, 1690, 1885, 2020, 2626, 2929, 3380, 3770, 4901, 5252, 5858, 6565, 7540, 9802, 11716, 13130, 14645, 17069, 19604, 24505, 26260, 29290, 34138, 38077, 49010, 58580, 68276, 76154, 85345, 98020, 152308, 170690, 190385, 341380, 380770, 495001, 761540, 990002, 1980004, 2475005, 4950010, 9900020]

約数ペア:

[(1, 9900020), (2, 4950010), (4, 2475005), (5, 1980004), (10, 990002), (13, 761540), (20, 495001), (26, 380770), (29, 341380), (52, 190385), (58, 170690), (65, 152308), (101, 98020), (116, 85345), (130, 76154), (145, 68276), (169, 58580), (202, 49010), (260, 38077), (290, 34138), (338, 29290), (377, 26260), (404, 24505), (505, 19604), (580, 17069), (676, 14645), (754, 13130), (845, 11716), (1010, 9802), (1313, 7540), (1508, 6565), (1690, 5858), (1885, 5252), (2020, 4901), (2626, 3770), (2929, 3380)]