31440760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{4651}}^1$

素因数の和:4688

約数の個数: 48

約数和(自身を含む): 76618440

約数和(自身を除く): 45177680

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 3380, 4651, 6760, 9302, 18604, 23255, 37208, 46510, 60463, 93020, 120926, 186040, 241852, 302315, 483704, 604630, 786019, 1209260, 1572038, 2418520, 3144076, 3930095, 6288152, 7860190, 15720380, 31440760]

約数ペア:

[(1, 31440760), (2, 15720380), (4, 7860190), (5, 6288152), (8, 3930095), (10, 3144076), (13, 2418520), (20, 1572038), (26, 1209260), (40, 786019), (52, 604630), (65, 483704), (104, 302315), (130, 241852), (169, 186040), (260, 120926), (338, 93020), (520, 60463), (676, 46510), (845, 37208), (1352, 23255), (1690, 18604), (3380, 9302), (4651, 6760)]