20745584780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1949}}^1\times {\mathrm{12377}}^1$

素因数の和:14378

約数の個数: 48

約数和(自身を含む): 44605360800

約数和(自身を除く): 23859776020

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 1949, 3898, 7796, 9745, 12377, 19490, 24754, 38980, 49508, 61885, 83807, 123770, 167614, 247540, 335228, 419035, 532211, 838070, 1064422, 1676140, 2128844, 2661055, 5322110, 10644220, 24122773, 48245546, 96491092, 120613865, 241227730, 482455460, 1037279239, 2074558478, 4149116956, 5186396195, 10372792390, 20745584780]

約数ペア:

[(1, 20745584780), (2, 10372792390), (4, 5186396195), (5, 4149116956), (10, 2074558478), (20, 1037279239), (43, 482455460), (86, 241227730), (172, 120613865), (215, 96491092), (430, 48245546), (860, 24122773), (1949, 10644220), (3898, 5322110), (7796, 2661055), (9745, 2128844), (12377, 1676140), (19490, 1064422), (24754, 838070), (38980, 532211), (49508, 419035), (61885, 335228), (83807, 247540), (123770, 167614)]