21885420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{15859}}^1$

素因数の和:15894

約数の個数: 48

約数和(自身を含む): 63947520

約数和(自身を除く): 42062100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 15859, 31718, 47577, 63436, 79295, 95154, 158590, 190308, 237885, 317180, 364757, 475770, 729514, 951540, 1094271, 1459028, 1823785, 2188542, 3647570, 4377084, 5471355, 7295140, 10942710, 21885420]

約数ペア:

[(1, 21885420), (2, 10942710), (3, 7295140), (4, 5471355), (5, 4377084), (6, 3647570), (10, 2188542), (12, 1823785), (15, 1459028), (20, 1094271), (23, 951540), (30, 729514), (46, 475770), (60, 364757), (69, 317180), (92, 237885), (115, 190308), (138, 158590), (230, 95154), (276, 79295), (345, 63436), (460, 47577), (690, 31718), (1380, 15859)]