81605200

素因数分解:

$2^4\times 5^2\times {\mathrm{204013}}^1$

素因数の和:204031

約数の個数: 30

約数和(自身を含む): 196057454

約数和(自身を除く): 114452254

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 204013, 408026, 816052, 1020065, 1632104, 2040130, 3264208, 4080260, 5100325, 8160520, 10200650, 16321040, 20401300, 40802600, 81605200]

約数ペア:

[(1, 81605200), (2, 40802600), (4, 20401300), (5, 16321040), (8, 10200650), (10, 8160520), (16, 5100325), (20, 4080260), (25, 3264208), (40, 2040130), (50, 1632104), (80, 1020065), (100, 816052), (200, 408026), (400, 204013)]