20216988

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2687}}^1$

素因数の和:2727

約数の個数: 72

約数和(自身を含む): 58705920

約数和(自身を除く): 38488932

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 19, 22, 33, 36, 38, 44, 57, 66, 76, 99, 114, 132, 171, 198, 209, 228, 342, 396, 418, 627, 684, 836, 1254, 1881, 2508, 2687, 3762, 5374, 7524, 8061, 10748, 16122, 24183, 29557, 32244, 48366, 51053, 59114, 88671, 96732, 102106, 118228, 153159, 177342, 204212, 266013, 306318, 354684, 459477, 532026, 561583, 612636, 918954, 1064052, 1123166, 1684749, 1837908, 2246332, 3369498, 5054247, 6738996, 10108494, 20216988]

約数ペア:

[(1, 20216988), (2, 10108494), (3, 6738996), (4, 5054247), (6, 3369498), (9, 2246332), (11, 1837908), (12, 1684749), (18, 1123166), (19, 1064052), (22, 918954), (33, 612636), (36, 561583), (38, 532026), (44, 459477), (57, 354684), (66, 306318), (76, 266013), (99, 204212), (114, 177342), (132, 153159), (171, 118228), (198, 102106), (209, 96732), (228, 88671), (342, 59114), (396, 51053), (418, 48366), (627, 32244), (684, 29557), (836, 24183), (1254, 16122), (1881, 10748), (2508, 8061), (2687, 7524), (3762, 5374)]