20616785

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 29417472

約数和(自身を除く): 8800687

約数列:

[1, 5, 7, 35, 47, 83, 151, 235, 329, 415, 581, 755, 1057, 1645, 2905, 3901, 5285, 7097, 12533, 19505, 27307, 35485, 49679, 62665, 87731, 136535, 248395, 438655, 589051, 2945255, 4123357, 20616785]

約数ペア:

[(1, 20616785), (5, 4123357), (7, 2945255), (35, 589051), (47, 438655), (83, 248395), (151, 136535), (235, 87731), (329, 62665), (415, 49679), (581, 35485), (755, 27307), (1057, 19505), (1645, 12533), (2905, 7097), (3901, 5285)]