403964420

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{80471}}^1$

素因数の和:80731

約数の個数: 24

約数和(自身を含む): 851715648

約数和(自身を除く): 447751228

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 5020, 80471, 160942, 321884, 402355, 804710, 1609420, 20198221, 40396442, 80792884, 100991105, 201982210, 403964420]

約数ペア:

[(1, 403964420), (2, 201982210), (4, 100991105), (5, 80792884), (10, 40396442), (20, 20198221), (251, 1609420), (502, 804710), (1004, 402355), (1255, 321884), (2510, 160942), (5020, 80471)]