7220720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:210

約数の個数: 80

約数和(自身を含む): 18561312

約数和(自身を除く): 11340592

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 53, 65, 80, 104, 106, 130, 131, 208, 212, 260, 262, 265, 424, 520, 524, 530, 655, 689, 848, 1040, 1048, 1060, 1310, 1378, 1703, 2096, 2120, 2620, 2756, 3406, 3445, 4240, 5240, 5512, 6812, 6890, 6943, 8515, 10480, 11024, 13624, 13780, 13886, 17030, 27248, 27560, 27772, 34060, 34715, 55120, 55544, 68120, 69430, 90259, 111088, 136240, 138860, 180518, 277720, 361036, 451295, 555440, 722072, 902590, 1444144, 1805180, 3610360, 7220720]

約数ペア:

[(1, 7220720), (2, 3610360), (4, 1805180), (5, 1444144), (8, 902590), (10, 722072), (13, 555440), (16, 451295), (20, 361036), (26, 277720), (40, 180518), (52, 138860), (53, 136240), (65, 111088), (80, 90259), (104, 69430), (106, 68120), (130, 55544), (131, 55120), (208, 34715), (212, 34060), (260, 27772), (262, 27560), (265, 27248), (424, 17030), (520, 13886), (524, 13780), (530, 13624), (655, 11024), (689, 10480), (848, 8515), (1040, 6943), (1048, 6890), (1060, 6812), (1310, 5512), (1378, 5240), (1703, 4240), (2096, 3445), (2120, 3406), (2620, 2756)]