21030678

素因数分解:

$2^1\times 3^5\times {\mathrm{109}}^1\times {\mathrm{397}}^1$

素因数の和:523

約数の個数: 48

約数和(自身を含む): 47807760

約数和(自身を除く): 26777082

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 109, 162, 218, 243, 327, 397, 486, 654, 794, 981, 1191, 1962, 2382, 2943, 3573, 5886, 7146, 8829, 10719, 17658, 21438, 26487, 32157, 43273, 52974, 64314, 86546, 96471, 129819, 192942, 259638, 389457, 778914, 1168371, 2336742, 3505113, 7010226, 10515339, 21030678]

約数ペア:

[(1, 21030678), (2, 10515339), (3, 7010226), (6, 3505113), (9, 2336742), (18, 1168371), (27, 778914), (54, 389457), (81, 259638), (109, 192942), (162, 129819), (218, 96471), (243, 86546), (327, 64314), (397, 52974), (486, 43273), (654, 32157), (794, 26487), (981, 21438), (1191, 17658), (1962, 10719), (2382, 8829), (2943, 7146), (3573, 5886)]