20450320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1367}}^1$

素因数の和:1408

約数の個数: 80

約数和(自身を含む): 54960768

約数和(自身を除く): 34510448

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 34, 40, 44, 55, 68, 80, 85, 88, 110, 136, 170, 176, 187, 220, 272, 340, 374, 440, 680, 748, 880, 935, 1360, 1367, 1496, 1870, 2734, 2992, 3740, 5468, 6835, 7480, 10936, 13670, 14960, 15037, 21872, 23239, 27340, 30074, 46478, 54680, 60148, 75185, 92956, 109360, 116195, 120296, 150370, 185912, 232390, 240592, 255629, 300740, 371824, 464780, 511258, 601480, 929560, 1022516, 1202960, 1278145, 1859120, 2045032, 2556290, 4090064, 5112580, 10225160, 20450320]

約数ペア:

[(1, 20450320), (2, 10225160), (4, 5112580), (5, 4090064), (8, 2556290), (10, 2045032), (11, 1859120), (16, 1278145), (17, 1202960), (20, 1022516), (22, 929560), (34, 601480), (40, 511258), (44, 464780), (55, 371824), (68, 300740), (80, 255629), (85, 240592), (88, 232390), (110, 185912), (136, 150370), (170, 120296), (176, 116195), (187, 109360), (220, 92956), (272, 75185), (340, 60148), (374, 54680), (440, 46478), (680, 30074), (748, 27340), (880, 23239), (935, 21872), (1360, 15037), (1367, 14960), (1496, 13670), (1870, 10936), (2734, 7480), (2992, 6835), (3740, 5468)]