21049367020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{251}}^1\times {\mathrm{1319}}^1$

素因数の和:1624

約数の個数: 144

約数和(自身を含む): 51468721920

約数和(自身を除く): 30419354900

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 251, 289, 340, 374, 502, 578, 748, 935, 1004, 1156, 1255, 1319, 1445, 1870, 2510, 2638, 2761, 2890, 3179, 3740, 4267, 5020, 5276, 5522, 5780, 6358, 6595, 8534, 11044, 12716, 13190, 13805, 14509, 15895, 17068, 21335, 22423, 26380, 27610, 29018, 31790, 42670, 44846, 46937, 55220, 58036, 63580, 72539, 72545, 85340, 89692, 93874, 112115, 145078, 145090, 187748, 224230, 234685, 246653, 290156, 290180, 331069, 362695, 381191, 448460, 469370, 493306, 662138, 725390, 762382, 797929, 938740, 986612, 1233265, 1324276, 1450780, 1524764, 1595858, 1655345, 1905955, 2466530, 3191716, 3310690, 3641759, 3811910, 3989645, 4193101, 4933060, 5628173, 6621380, 7283518, 7623820, 7979290, 8386202, 11256346, 14567036, 15958580, 16772404, 18208795, 20965505, 22512692, 28140865, 36417590, 41931010, 56281730, 61909903, 72835180, 83862020, 95678941, 112563460, 123819806, 191357882, 247639612, 309549515, 382715764, 478394705, 619099030, 956789410, 1052468351, 1238198060, 1913578820, 2104936702, 4209873404, 5262341755, 10524683510, 21049367020]

約数ペア:

[(1, 21049367020), (2, 10524683510), (4, 5262341755), (5, 4209873404), (10, 2104936702), (11, 1913578820), (17, 1238198060), (20, 1052468351), (22, 956789410), (34, 619099030), (44, 478394705), (55, 382715764), (68, 309549515), (85, 247639612), (110, 191357882), (170, 123819806), (187, 112563460), (220, 95678941), (251, 83862020), (289, 72835180), (340, 61909903), (374, 56281730), (502, 41931010), (578, 36417590), (748, 28140865), (935, 22512692), (1004, 20965505), (1156, 18208795), (1255, 16772404), (1319, 15958580), (1445, 14567036), (1870, 11256346), (2510, 8386202), (2638, 7979290), (2761, 7623820), (2890, 7283518), (3179, 6621380), (3740, 5628173), (4267, 4933060), (5020, 4193101), (5276, 3989645), (5522, 3811910), (5780, 3641759), (6358, 3310690), (6595, 3191716), (8534, 2466530), (11044, 1905955), (12716, 1655345), (13190, 1595858), (13805, 1524764), (14509, 1450780), (15895, 1324276), (17068, 1233265), (21335, 986612), (22423, 938740), (26380, 797929), (27610, 762382), (29018, 725390), (31790, 662138), (42670, 493306), (44846, 469370), (46937, 448460), (55220, 381191), (58036, 362695), (63580, 331069), (72539, 290180), (72545, 290156), (85340, 246653), (89692, 234685), (93874, 224230), (112115, 187748), (145078, 145090)]