21000660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{4217}}^1$

素因数の和:4312

約数の個数: 48

約数和(自身を含む): 59524416

約数和(自身を除く): 38523756

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 83, 166, 249, 332, 415, 498, 830, 996, 1245, 1660, 2490, 4217, 4980, 8434, 12651, 16868, 21085, 25302, 42170, 50604, 63255, 84340, 126510, 253020, 350011, 700022, 1050033, 1400044, 1750055, 2100066, 3500110, 4200132, 5250165, 7000220, 10500330, 21000660]

約数ペア:

[(1, 21000660), (2, 10500330), (3, 7000220), (4, 5250165), (5, 4200132), (6, 3500110), (10, 2100066), (12, 1750055), (15, 1400044), (20, 1050033), (30, 700022), (60, 350011), (83, 253020), (166, 126510), (249, 84340), (332, 63255), (415, 50604), (498, 42170), (830, 25302), (996, 21085), (1245, 16868), (1660, 12651), (2490, 8434), (4217, 4980)]