20541560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39503}}^1$

素因数の和:39527

約数の個数: 32

約数和(自身を含む): 49775040

約数和(自身を除く): 29233480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39503, 79006, 158012, 197515, 316024, 395030, 513539, 790060, 1027078, 1580120, 2054156, 2567695, 4108312, 5135390, 10270780, 20541560]

約数ペア:

[(1, 20541560), (2, 10270780), (4, 5135390), (5, 4108312), (8, 2567695), (10, 2054156), (13, 1580120), (20, 1027078), (26, 790060), (40, 513539), (52, 395030), (65, 316024), (104, 197515), (130, 158012), (260, 79006), (520, 39503)]