80912020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{659}}^1\times {\mathrm{877}}^1$

素因数の和:1552

約数の個数: 48

約数和(自身を含む): 194705280

約数和(自身を除く): 113793260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 659, 877, 1318, 1754, 2636, 3295, 3508, 4385, 4613, 6139, 6590, 8770, 9226, 12278, 13180, 17540, 18452, 23065, 24556, 30695, 46130, 61390, 92260, 122780, 577943, 1155886, 2311772, 2889715, 4045601, 5779430, 8091202, 11558860, 16182404, 20228005, 40456010, 80912020]

約数ペア:

[(1, 80912020), (2, 40456010), (4, 20228005), (5, 16182404), (7, 11558860), (10, 8091202), (14, 5779430), (20, 4045601), (28, 2889715), (35, 2311772), (70, 1155886), (140, 577943), (659, 122780), (877, 92260), (1318, 61390), (1754, 46130), (2636, 30695), (3295, 24556), (3508, 23065), (4385, 18452), (4613, 17540), (6139, 13180), (6590, 12278), (8770, 9226)]