20995304

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{433}}^1$

素因数の和:498

約数の個数: 64

約数和(自身を含む): 46872000

約数和(自身を除く): 25876696

約数列:

[1, 2, 4, 8, 11, 19, 22, 29, 38, 44, 58, 76, 88, 116, 152, 209, 232, 319, 418, 433, 551, 638, 836, 866, 1102, 1276, 1672, 1732, 2204, 2552, 3464, 4408, 4763, 6061, 8227, 9526, 12122, 12557, 16454, 19052, 24244, 25114, 32908, 38104, 48488, 50228, 65816, 90497, 100456, 138127, 180994, 238583, 276254, 361988, 477166, 552508, 723976, 954332, 1105016, 1908664, 2624413, 5248826, 10497652, 20995304]

約数ペア:

[(1, 20995304), (2, 10497652), (4, 5248826), (8, 2624413), (11, 1908664), (19, 1105016), (22, 954332), (29, 723976), (38, 552508), (44, 477166), (58, 361988), (76, 276254), (88, 238583), (116, 180994), (152, 138127), (209, 100456), (232, 90497), (319, 65816), (418, 50228), (433, 48488), (551, 38104), (638, 32908), (836, 25114), (866, 24244), (1102, 19052), (1276, 16454), (1672, 12557), (1732, 12122), (2204, 9526), (2552, 8227), (3464, 6061), (4408, 4763)]