1805180

素因数分解:

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

素因数の和:206

約数の個数: 48

約数和(自身を含む): 4191264

約数和(自身を除く): 2386084

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 131, 212, 260, 262, 265, 524, 530, 655, 689, 1060, 1310, 1378, 1703, 2620, 2756, 3406, 3445, 6812, 6890, 6943, 8515, 13780, 13886, 17030, 27772, 34060, 34715, 69430, 90259, 138860, 180518, 361036, 451295, 902590, 1805180]

約数ペア:

[(1, 1805180), (2, 902590), (4, 451295), (5, 361036), (10, 180518), (13, 138860), (20, 90259), (26, 69430), (52, 34715), (53, 34060), (65, 27772), (106, 17030), (130, 13886), (131, 13780), (212, 8515), (260, 6943), (262, 6890), (265, 6812), (524, 3445), (530, 3406), (655, 2756), (689, 2620), (1060, 1703), (1310, 1378)]