19955728

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2593}}^1$

素因数の和:2651

約数の個数: 40

約数和(自身を含む): 42780248

約数和(自身を除く): 22824520

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 74, 104, 148, 208, 296, 481, 592, 962, 1924, 2593, 3848, 5186, 7696, 10372, 20744, 33709, 41488, 67418, 95941, 134836, 191882, 269672, 383764, 539344, 767528, 1247233, 1535056, 2494466, 4988932, 9977864, 19955728]

約数ペア:

[(1, 19955728), (2, 9977864), (4, 4988932), (8, 2494466), (13, 1535056), (16, 1247233), (26, 767528), (37, 539344), (52, 383764), (74, 269672), (104, 191882), (148, 134836), (208, 95941), (296, 67418), (481, 41488), (592, 33709), (962, 20744), (1924, 10372), (2593, 7696), (3848, 5186)]