280807410

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{720019}}^1$

素因数の和:720042

約数の個数: 32

約数和(自身を含む): 725780160

約数和(自身を除く): 444972750

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 720019, 1440038, 2160057, 3600095, 4320114, 7200190, 9360247, 10800285, 18720494, 21600570, 28080741, 46801235, 56161482, 93602470, 140403705, 280807410]

約数ペア:

[(1, 280807410), (2, 140403705), (3, 93602470), (5, 56161482), (6, 46801235), (10, 28080741), (13, 21600570), (15, 18720494), (26, 10800285), (30, 9360247), (39, 7200190), (65, 4320114), (78, 3600095), (130, 2160057), (195, 1440038), (390, 720019)]