8129890

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:378

約数の個数: 32

約数和(自身を含む): 15240960

約数和(自身を除く): 7111070

約数列:

[1, 2, 5, 10, 41, 79, 82, 158, 205, 251, 395, 410, 502, 790, 1255, 2510, 3239, 6478, 10291, 16195, 19829, 20582, 32390, 39658, 51455, 99145, 102910, 198290, 812989, 1625978, 4064945, 8129890]

約数ペア:

[(1, 8129890), (2, 4064945), (5, 1625978), (10, 812989), (41, 198290), (79, 102910), (82, 99145), (158, 51455), (205, 39658), (251, 32390), (395, 20582), (410, 19829), (502, 16195), (790, 10291), (1255, 6478), (2510, 3239)]