1282180580

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{557}}^1\times {\mathrm{643}}^1$

素因数の和:1388

約数の個数: 48

約数和(自身を含む): 2716701120

約数和(自身を除く): 1434520540

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 557, 643, 716, 895, 1114, 1286, 1790, 2228, 2572, 2785, 3215, 3580, 5570, 6430, 11140, 12860, 99703, 115097, 199406, 230194, 358151, 398812, 460388, 498515, 575485, 716302, 997030, 1150970, 1432604, 1790755, 1994060, 2301940, 3581510, 7163020, 64109029, 128218058, 256436116, 320545145, 641090290, 1282180580]

約数ペア:

[(1, 1282180580), (2, 641090290), (4, 320545145), (5, 256436116), (10, 128218058), (20, 64109029), (179, 7163020), (358, 3581510), (557, 2301940), (643, 1994060), (716, 1790755), (895, 1432604), (1114, 1150970), (1286, 997030), (1790, 716302), (2228, 575485), (2572, 498515), (2785, 460388), (3215, 398812), (3580, 358151), (5570, 230194), (6430, 199406), (11140, 115097), (12860, 99703)]