21836890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{263}}^1$

素因数の和:331

約数の個数: 48

約数和(自身を含む): 43452288

約数和(自身を除く): 21615398

約数列:

[1, 2, 5, 10, 19, 23, 38, 46, 95, 115, 190, 230, 263, 361, 437, 526, 722, 874, 1315, 1805, 2185, 2630, 3610, 4370, 4997, 6049, 8303, 9994, 12098, 16606, 24985, 30245, 41515, 49970, 60490, 83030, 94943, 114931, 189886, 229862, 474715, 574655, 949430, 1149310, 2183689, 4367378, 10918445, 21836890]

約数ペア:

[(1, 21836890), (2, 10918445), (5, 4367378), (10, 2183689), (19, 1149310), (23, 949430), (38, 574655), (46, 474715), (95, 229862), (115, 189886), (190, 114931), (230, 94943), (263, 83030), (361, 60490), (437, 49970), (526, 41515), (722, 30245), (874, 24985), (1315, 16606), (1805, 12098), (2185, 9994), (2630, 8303), (3610, 6049), (4370, 4997)]