81753880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157219}}^1$

素因数の和:157243

約数の個数: 32

約数和(自身を含む): 198097200

約数和(自身を除く): 116343320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 157219, 314438, 628876, 786095, 1257752, 1572190, 2043847, 3144380, 4087694, 6288760, 8175388, 10219235, 16350776, 20438470, 40876940, 81753880]

約数ペア:

[(1, 81753880), (2, 40876940), (4, 20438470), (5, 16350776), (8, 10219235), (10, 8175388), (13, 6288760), (20, 4087694), (26, 3144380), (40, 2043847), (52, 1572190), (65, 1257752), (104, 786095), (130, 628876), (260, 314438), (520, 157219)]