20099248

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1361}}^1$

素因数の和:1453

約数の個数: 40

約数和(自身を含む): 42559776

約数和(自身を除く): 22460528

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 71, 104, 142, 208, 284, 568, 923, 1136, 1361, 1846, 2722, 3692, 5444, 7384, 10888, 14768, 17693, 21776, 35386, 70772, 96631, 141544, 193262, 283088, 386524, 773048, 1256203, 1546096, 2512406, 5024812, 10049624, 20099248]

約数ペア:

[(1, 20099248), (2, 10049624), (4, 5024812), (8, 2512406), (13, 1546096), (16, 1256203), (26, 773048), (52, 386524), (71, 283088), (104, 193262), (142, 141544), (208, 96631), (284, 70772), (568, 35386), (923, 21776), (1136, 17693), (1361, 14768), (1846, 10888), (2722, 7384), (3692, 5444)]