15281720

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{6263}}^1$

素因数の和:6335

約数の個数: 32

約数和(自身を含む): 34953120

約数和(自身を除く): 19671400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 6263, 12526, 25052, 31315, 50104, 62630, 125260, 250520, 382043, 764086, 1528172, 1910215, 3056344, 3820430, 7640860, 15281720]

約数ペア:

[(1, 15281720), (2, 7640860), (4, 3820430), (5, 3056344), (8, 1910215), (10, 1528172), (20, 764086), (40, 382043), (61, 250520), (122, 125260), (244, 62630), (305, 50104), (488, 31315), (610, 25052), (1220, 12526), (2440, 6263)]