30721760

素因数分解:

$2^5\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1223}}^1$

素因数の和:1395

約数の個数: 48

約数和(自身を含む): 73102176

約数和(自身を除く): 42380416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 157, 160, 314, 628, 785, 1223, 1256, 1570, 2446, 2512, 3140, 4892, 5024, 6115, 6280, 9784, 12230, 12560, 19568, 24460, 25120, 39136, 48920, 97840, 192011, 195680, 384022, 768044, 960055, 1536088, 1920110, 3072176, 3840220, 6144352, 7680440, 15360880, 30721760]

約数ペア:

[(1, 30721760), (2, 15360880), (4, 7680440), (5, 6144352), (8, 3840220), (10, 3072176), (16, 1920110), (20, 1536088), (32, 960055), (40, 768044), (80, 384022), (157, 195680), (160, 192011), (314, 97840), (628, 48920), (785, 39136), (1223, 25120), (1256, 24460), (1570, 19568), (2446, 12560), (2512, 12230), (3140, 9784), (4892, 6280), (5024, 6115)]