261396780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{55147}}^1$

素因数の和:55238

約数の個数: 48

約数和(自身を含む): 741189120

約数和(自身を除く): 479792340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 79, 158, 237, 316, 395, 474, 790, 948, 1185, 1580, 2370, 4740, 55147, 110294, 165441, 220588, 275735, 330882, 551470, 661764, 827205, 1102940, 1654410, 3308820, 4356613, 8713226, 13069839, 17426452, 21783065, 26139678, 43566130, 52279356, 65349195, 87132260, 130698390, 261396780]

約数ペア:

[(1, 261396780), (2, 130698390), (3, 87132260), (4, 65349195), (5, 52279356), (6, 43566130), (10, 26139678), (12, 21783065), (15, 17426452), (20, 13069839), (30, 8713226), (60, 4356613), (79, 3308820), (158, 1654410), (237, 1102940), (316, 827205), (395, 661764), (474, 551470), (790, 330882), (948, 275735), (1185, 220588), (1580, 165441), (2370, 110294), (4740, 55147)]