72508540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{278879}}^1$

素因数の和:278901

約数の個数: 24

約数和(自身を含む): 163981440

約数和(自身を除く): 91472900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 278879, 557758, 1115516, 1394395, 2788790, 3625427, 5577580, 7250854, 14501708, 18127135, 36254270, 72508540]

約数ペア:

[(1, 72508540), (2, 36254270), (4, 18127135), (5, 14501708), (10, 7250854), (13, 5577580), (20, 3625427), (26, 2788790), (52, 1394395), (65, 1115516), (130, 557758), (260, 278879)]