28761880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{739}}^1$

素因数の和:896

約数の個数: 64

約数和(自身を含む): 74592000

約数和(自身を除く): 45830120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 556, 695, 739, 973, 1112, 1390, 1478, 1946, 2780, 2956, 3695, 3892, 4865, 5173, 5560, 5912, 7390, 7784, 9730, 10346, 14780, 19460, 20692, 25865, 29560, 38920, 41384, 51730, 102721, 103460, 205442, 206920, 410884, 513605, 719047, 821768, 1027210, 1438094, 2054420, 2876188, 3595235, 4108840, 5752376, 7190470, 14380940, 28761880]

約数ペア:

[(1, 28761880), (2, 14380940), (4, 7190470), (5, 5752376), (7, 4108840), (8, 3595235), (10, 2876188), (14, 2054420), (20, 1438094), (28, 1027210), (35, 821768), (40, 719047), (56, 513605), (70, 410884), (139, 206920), (140, 205442), (278, 103460), (280, 102721), (556, 51730), (695, 41384), (739, 38920), (973, 29560), (1112, 25865), (1390, 20692), (1478, 19460), (1946, 14780), (2780, 10346), (2956, 9730), (3695, 7784), (3892, 7390), (4865, 5912), (5173, 5560)]