20028320

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9629}}^1$

素因数の和:9657

約数の個数: 48

約数和(自身を含む): 50961960

約数和(自身を除く): 30933640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9629, 19258, 38516, 48145, 77032, 96290, 125177, 154064, 192580, 250354, 308128, 385160, 500708, 625885, 770320, 1001416, 1251770, 1540640, 2002832, 2503540, 4005664, 5007080, 10014160, 20028320]

約数ペア:

[(1, 20028320), (2, 10014160), (4, 5007080), (5, 4005664), (8, 2503540), (10, 2002832), (13, 1540640), (16, 1251770), (20, 1001416), (26, 770320), (32, 625885), (40, 500708), (52, 385160), (65, 308128), (80, 250354), (104, 192580), (130, 154064), (160, 125177), (208, 96290), (260, 77032), (416, 48145), (520, 38516), (1040, 19258), (2080, 9629)]