21012840

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{58369}}^1$

素因数の和:58386

約数の個数: 48

約数和(自身を含む): 68292900

約数和(自身を除く): 47280060

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, 58369, 116738, 175107, 233476, 291845, 350214, 466952, 525321, 583690, 700428, 875535, 1050642, 1167380, 1400856, 1751070, 2101284, 2334760, 2626605, 3502140, 4202568, 5253210, 7004280, 10506420, 21012840]

約数ペア:

[(1, 21012840), (2, 10506420), (3, 7004280), (4, 5253210), (5, 4202568), (6, 3502140), (8, 2626605), (9, 2334760), (10, 2101284), (12, 1751070), (15, 1400856), (18, 1167380), (20, 1050642), (24, 875535), (30, 700428), (36, 583690), (40, 525321), (45, 466952), (60, 350214), (72, 291845), (90, 233476), (120, 175107), (180, 116738), (360, 58369)]