71971480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{641}}^1$

素因数の和:1060

約数の個数: 64

約数和(自身を含む): 185820480

約数和(自身を除く): 113849000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 401, 641, 802, 1282, 1604, 2005, 2564, 2807, 3205, 3208, 4010, 4487, 5128, 5614, 6410, 8020, 8974, 11228, 12820, 14035, 16040, 17948, 22435, 22456, 25640, 28070, 35896, 44870, 56140, 89740, 112280, 179480, 257041, 514082, 1028164, 1285205, 1799287, 2056328, 2570410, 3598574, 5140820, 7197148, 8996435, 10281640, 14394296, 17992870, 35985740, 71971480]

約数ペア:

[(1, 71971480), (2, 35985740), (4, 17992870), (5, 14394296), (7, 10281640), (8, 8996435), (10, 7197148), (14, 5140820), (20, 3598574), (28, 2570410), (35, 2056328), (40, 1799287), (56, 1285205), (70, 1028164), (140, 514082), (280, 257041), (401, 179480), (641, 112280), (802, 89740), (1282, 56140), (1604, 44870), (2005, 35896), (2564, 28070), (2807, 25640), (3205, 22456), (3208, 22435), (4010, 17948), (4487, 16040), (5128, 14035), (5614, 12820), (6410, 11228), (8020, 8974)]