81902860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{315011}}^1$

素因数の和:315033

約数の個数: 24

約数和(自身を含む): 185227056

約数和(自身を除く): 103324196

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 315011, 630022, 1260044, 1575055, 3150110, 4095143, 6300220, 8190286, 16380572, 20475715, 40951430, 81902860]

約数ペア:

[(1, 81902860), (2, 40951430), (4, 20475715), (5, 16380572), (10, 8190286), (13, 6300220), (20, 4095143), (26, 3150110), (52, 1575055), (65, 1260044), (130, 630022), (260, 315011)]