21220095585

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{857}}^1\times {\mathrm{2953}}^1$

素因数の和:3874

約数の個数: 64

約数和(自身を含む): 37470521088

約数和(自身を除く): 16250425503

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 129, 195, 215, 559, 645, 857, 1677, 2571, 2795, 2953, 4285, 8385, 8859, 11141, 12855, 14765, 33423, 36851, 38389, 44295, 55705, 110553, 115167, 126979, 167115, 184255, 191945, 380937, 479063, 552765, 575835, 634895, 1437189, 1650727, 1904685, 2395315, 2530721, 4952181, 7185945, 7592163, 8253635, 12653605, 24760905, 32899373, 37960815, 98698119, 108821003, 164496865, 326463009, 493490595, 544105015, 1414673039, 1632315045, 4244019117, 7073365195, 21220095585]

約数ペア:

[(1, 21220095585), (3, 7073365195), (5, 4244019117), (13, 1632315045), (15, 1414673039), (39, 544105015), (43, 493490595), (65, 326463009), (129, 164496865), (195, 108821003), (215, 98698119), (559, 37960815), (645, 32899373), (857, 24760905), (1677, 12653605), (2571, 8253635), (2795, 7592163), (2953, 7185945), (4285, 4952181), (8385, 2530721), (8859, 2395315), (11141, 1904685), (12855, 1650727), (14765, 1437189), (33423, 634895), (36851, 575835), (38389, 552765), (44295, 479063), (55705, 380937), (110553, 191945), (115167, 184255), (126979, 167115)]