21500280

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{59723}}^1$

素因数の和:59740

約数の個数: 48

約数和(自身を含む): 69877080

約数和(自身を除く): 48376800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 59723, 119446, 179169, 238892, 298615, 358338, 477784, 537507, 597230, 716676, 895845, 1075014, 1194460, 1433352, 1791690, 2150028, 2388920, 2687535, 3583380, 4300056, 5375070, 7166760, 10750140, 21500280]

約数ペア:

[(1, 21500280), (2, 10750140), (3, 7166760), (4, 5375070), (5, 4300056), (6, 3583380), (8, 2687535), (9, 2388920), (10, 2150028), (12, 1791690), (15, 1433352), (18, 1194460), (20, 1075014), (24, 895845), (30, 716676), (36, 597230), (40, 537507), (45, 477784), (60, 358338), (72, 298615), (90, 238892), (120, 179169), (180, 119446), (360, 59723)]