20139440

素因数分解:

$2^4\times 5^1\times {\mathrm{227}}^1\times {\mathrm{1109}}^1$

素因数の和:1349

約数の個数: 40

約数和(自身を含む): 47072880

約数和(自身を除く): 26933440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 227, 454, 908, 1109, 1135, 1816, 2218, 2270, 3632, 4436, 4540, 5545, 8872, 9080, 11090, 17744, 18160, 22180, 44360, 88720, 251743, 503486, 1006972, 1258715, 2013944, 2517430, 4027888, 5034860, 10069720, 20139440]

約数ペア:

[(1, 20139440), (2, 10069720), (4, 5034860), (5, 4027888), (8, 2517430), (10, 2013944), (16, 1258715), (20, 1006972), (40, 503486), (80, 251743), (227, 88720), (454, 44360), (908, 22180), (1109, 18160), (1135, 17744), (1816, 11090), (2218, 9080), (2270, 8872), (3632, 5545), (4436, 4540)]