20670620

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{227}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 45390240

約数和(自身を除く): 24719620

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 157, 227, 290, 314, 454, 580, 628, 785, 908, 1135, 1570, 2270, 3140, 4540, 4553, 6583, 9106, 13166, 18212, 22765, 26332, 32915, 35639, 45530, 65830, 71278, 91060, 131660, 142556, 178195, 356390, 712780, 1033531, 2067062, 4134124, 5167655, 10335310, 20670620]

約数ペア:

[(1, 20670620), (2, 10335310), (4, 5167655), (5, 4134124), (10, 2067062), (20, 1033531), (29, 712780), (58, 356390), (116, 178195), (145, 142556), (157, 131660), (227, 91060), (290, 71278), (314, 65830), (454, 45530), (580, 35639), (628, 32915), (785, 26332), (908, 22765), (1135, 18212), (1570, 13166), (2270, 9106), (3140, 6583), (4540, 4553)]