15560840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:246

約数の個数: 64

約数和(自身を含む): 36590400

約数和(自身を除く): 21029560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 83, 86, 109, 166, 172, 215, 218, 332, 344, 415, 430, 436, 545, 664, 830, 860, 872, 1090, 1660, 1720, 2180, 3320, 3569, 4360, 4687, 7138, 9047, 9374, 14276, 17845, 18094, 18748, 23435, 28552, 35690, 36188, 37496, 45235, 46870, 71380, 72376, 90470, 93740, 142760, 180940, 187480, 361880, 389021, 778042, 1556084, 1945105, 3112168, 3890210, 7780420, 15560840]

約数ペア:

[(1, 15560840), (2, 7780420), (4, 3890210), (5, 3112168), (8, 1945105), (10, 1556084), (20, 778042), (40, 389021), (43, 361880), (83, 187480), (86, 180940), (109, 142760), (166, 93740), (172, 90470), (215, 72376), (218, 71380), (332, 46870), (344, 45235), (415, 37496), (430, 36188), (436, 35690), (545, 28552), (664, 23435), (830, 18748), (860, 18094), (872, 17845), (1090, 14276), (1660, 9374), (1720, 9047), (2180, 7138), (3320, 4687), (3569, 4360)]