25181240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{647}}^1$

素因数の和:804

約数の個数: 64

約数和(自身を含む): 65318400

約数和(自身を除く): 40137160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 556, 647, 695, 973, 1112, 1294, 1390, 1946, 2588, 2780, 3235, 3892, 4529, 4865, 5176, 5560, 6470, 7784, 9058, 9730, 12940, 18116, 19460, 22645, 25880, 36232, 38920, 45290, 89933, 90580, 179866, 181160, 359732, 449665, 629531, 719464, 899330, 1259062, 1798660, 2518124, 3147655, 3597320, 5036248, 6295310, 12590620, 25181240]

約数ペア:

[(1, 25181240), (2, 12590620), (4, 6295310), (5, 5036248), (7, 3597320), (8, 3147655), (10, 2518124), (14, 1798660), (20, 1259062), (28, 899330), (35, 719464), (40, 629531), (56, 449665), (70, 359732), (139, 181160), (140, 179866), (278, 90580), (280, 89933), (556, 45290), (647, 38920), (695, 36232), (973, 25880), (1112, 22645), (1294, 19460), (1390, 18116), (1946, 12940), (2588, 9730), (2780, 9058), (3235, 7784), (3892, 6470), (4529, 5560), (4865, 5176)]