7861840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:260

約数の個数: 80

約数和(自身を含む): 21248640

約数和(自身を除く): 13386800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 101, 112, 139, 140, 202, 278, 280, 404, 505, 556, 560, 695, 707, 808, 973, 1010, 1112, 1390, 1414, 1616, 1946, 2020, 2224, 2780, 2828, 3535, 3892, 4040, 4865, 5560, 5656, 7070, 7784, 8080, 9730, 11120, 11312, 14039, 14140, 15568, 19460, 28078, 28280, 38920, 56156, 56560, 70195, 77840, 98273, 112312, 140390, 196546, 224624, 280780, 393092, 491365, 561560, 786184, 982730, 1123120, 1572368, 1965460, 3930920, 7861840]

約数ペア:

[(1, 7861840), (2, 3930920), (4, 1965460), (5, 1572368), (7, 1123120), (8, 982730), (10, 786184), (14, 561560), (16, 491365), (20, 393092), (28, 280780), (35, 224624), (40, 196546), (56, 140390), (70, 112312), (80, 98273), (101, 77840), (112, 70195), (139, 56560), (140, 56156), (202, 38920), (278, 28280), (280, 28078), (404, 19460), (505, 15568), (556, 14140), (560, 14039), (695, 11312), (707, 11120), (808, 9730), (973, 8080), (1010, 7784), (1112, 7070), (1390, 5656), (1414, 5560), (1616, 4865), (1946, 4040), (2020, 3892), (2224, 3535), (2780, 2828)]