20638320

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{113}}^1\times {\mathrm{761}}^1$

素因数の和:890

約数の個数: 80

約数和(自身を含む): 64629792

約数和(自身を除く): 43991472

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 113, 120, 226, 240, 339, 452, 565, 678, 761, 904, 1130, 1356, 1522, 1695, 1808, 2260, 2283, 2712, 3044, 3390, 3805, 4520, 4566, 5424, 6088, 6780, 7610, 9040, 9132, 11415, 12176, 13560, 15220, 18264, 22830, 27120, 30440, 36528, 45660, 60880, 85993, 91320, 171986, 182640, 257979, 343972, 429965, 515958, 687944, 859930, 1031916, 1289895, 1375888, 1719860, 2063832, 2579790, 3439720, 4127664, 5159580, 6879440, 10319160, 20638320]

約数ペア:

[(1, 20638320), (2, 10319160), (3, 6879440), (4, 5159580), (5, 4127664), (6, 3439720), (8, 2579790), (10, 2063832), (12, 1719860), (15, 1375888), (16, 1289895), (20, 1031916), (24, 859930), (30, 687944), (40, 515958), (48, 429965), (60, 343972), (80, 257979), (113, 182640), (120, 171986), (226, 91320), (240, 85993), (339, 60880), (452, 45660), (565, 36528), (678, 30440), (761, 27120), (904, 22830), (1130, 18264), (1356, 15220), (1522, 13560), (1695, 12176), (1808, 11415), (2260, 9132), (2283, 9040), (2712, 7610), (3044, 6780), (3390, 6088), (3805, 5424), (4520, 4566)]