21006590

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{23}}^2$

素因数の和:102

約数の個数: 72

約数和(自身を含む): 45509688

約数和(自身を除く): 24503098

約数列:

[1, 2, 5, 10, 11, 19, 22, 23, 38, 46, 55, 95, 110, 115, 190, 209, 230, 253, 361, 418, 437, 506, 529, 722, 874, 1045, 1058, 1265, 1805, 2090, 2185, 2530, 2645, 3610, 3971, 4370, 4807, 5290, 5819, 7942, 8303, 9614, 10051, 11638, 16606, 19855, 20102, 24035, 29095, 39710, 41515, 48070, 50255, 58190, 83030, 91333, 100510, 110561, 182666, 190969, 221122, 381938, 456665, 552805, 913330, 954845, 1105610, 1909690, 2100659, 4201318, 10503295, 21006590]

約数ペア:

[(1, 21006590), (2, 10503295), (5, 4201318), (10, 2100659), (11, 1909690), (19, 1105610), (22, 954845), (23, 913330), (38, 552805), (46, 456665), (55, 381938), (95, 221122), (110, 190969), (115, 182666), (190, 110561), (209, 100510), (230, 91333), (253, 83030), (361, 58190), (418, 50255), (437, 48070), (506, 41515), (529, 39710), (722, 29095), (874, 24035), (1045, 20102), (1058, 19855), (1265, 16606), (1805, 11638), (2090, 10051), (2185, 9614), (2530, 8303), (2645, 7942), (3610, 5819), (3971, 5290), (4370, 4807)]