80944220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{19937}}^1$

素因数の和:19982

約数の個数: 48

約数和(自身を含む): 200975040

約数和(自身を除く): 120030820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 19937, 39874, 79748, 99685, 139559, 199370, 279118, 398740, 558236, 578173, 697795, 1156346, 1395590, 2312692, 2791180, 2890865, 4047211, 5781730, 8094422, 11563460, 16188844, 20236055, 40472110, 80944220]

約数ペア:

[(1, 80944220), (2, 40472110), (4, 20236055), (5, 16188844), (7, 11563460), (10, 8094422), (14, 5781730), (20, 4047211), (28, 2890865), (29, 2791180), (35, 2312692), (58, 1395590), (70, 1156346), (116, 697795), (140, 578173), (145, 558236), (203, 398740), (290, 279118), (406, 199370), (580, 139559), (812, 99685), (1015, 79748), (2030, 39874), (4060, 19937)]