19975280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19207}}^1$

素因数の和:19233

約数の個数: 40

約数和(自身を含む): 50017632

約数和(自身を除く): 30042352

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19207, 38414, 76828, 96035, 153656, 192070, 249691, 307312, 384140, 499382, 768280, 998764, 1248455, 1536560, 1997528, 2496910, 3995056, 4993820, 9987640, 19975280]

約数ペア:

[(1, 19975280), (2, 9987640), (4, 4993820), (5, 3995056), (8, 2496910), (10, 1997528), (13, 1536560), (16, 1248455), (20, 998764), (26, 768280), (40, 499382), (52, 384140), (65, 307312), (80, 249691), (104, 192070), (130, 153656), (208, 96035), (260, 76828), (520, 38414), (1040, 19207)]