81326560

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72613}}^1$

素因数の和:72635

約数の個数: 48

約数和(自身を含む): 219584736

約数和(自身を除く): 138258176

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72613, 145226, 290452, 363065, 508291, 580904, 726130, 1016582, 1161808, 1452260, 2033164, 2323616, 2541455, 2904520, 4066328, 5082910, 5809040, 8132656, 10165820, 11618080, 16265312, 20331640, 40663280, 81326560]

約数ペア:

[(1, 81326560), (2, 40663280), (4, 20331640), (5, 16265312), (7, 11618080), (8, 10165820), (10, 8132656), (14, 5809040), (16, 5082910), (20, 4066328), (28, 2904520), (32, 2541455), (35, 2323616), (40, 2033164), (56, 1452260), (70, 1161808), (80, 1016582), (112, 726130), (140, 580904), (160, 508291), (224, 363065), (280, 290452), (560, 145226), (1120, 72613)]