20550460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{641}}^1$

素因数の和:886

約数の個数: 48

約数和(自身を含む): 49613760

約数和(自身を除く): 29063300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 229, 458, 641, 916, 1145, 1282, 1603, 2290, 2564, 3205, 3206, 4487, 4580, 6410, 6412, 8015, 8974, 12820, 16030, 17948, 22435, 32060, 44870, 89740, 146789, 293578, 587156, 733945, 1027523, 1467890, 2055046, 2935780, 4110092, 5137615, 10275230, 20550460]

約数ペア:

[(1, 20550460), (2, 10275230), (4, 5137615), (5, 4110092), (7, 2935780), (10, 2055046), (14, 1467890), (20, 1027523), (28, 733945), (35, 587156), (70, 293578), (140, 146789), (229, 89740), (458, 44870), (641, 32060), (916, 22435), (1145, 17948), (1282, 16030), (1603, 12820), (2290, 8974), (2564, 8015), (3205, 6412), (3206, 6410), (4487, 4580)]