655126540

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{227}}^1\times {\mathrm{1277}}^1$

素因数の和:1626

約数の個数: 48

約数和(自身を含む): 1395146592

約数和(自身を除く): 740020052

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 227, 452, 454, 565, 908, 1130, 1135, 1277, 2260, 2270, 2554, 4540, 5108, 6385, 12770, 25540, 25651, 51302, 102604, 128255, 144301, 256510, 288602, 289879, 513020, 577204, 579758, 721505, 1159516, 1443010, 1449395, 2886020, 2898790, 5797580, 32756327, 65512654, 131025308, 163781635, 327563270, 655126540]

約数ペア:

[(1, 655126540), (2, 327563270), (4, 163781635), (5, 131025308), (10, 65512654), (20, 32756327), (113, 5797580), (226, 2898790), (227, 2886020), (452, 1449395), (454, 1443010), (565, 1159516), (908, 721505), (1130, 579758), (1135, 577204), (1277, 513020), (2260, 289879), (2270, 288602), (2554, 256510), (4540, 144301), (5108, 128255), (6385, 102604), (12770, 51302), (25540, 25651)]