28251440

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{7207}}^1$

素因数の和:7234

約数の個数: 60

約数和(自身を含む): 76419216

約数和(自身を除く): 48167776

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 7207, 14414, 28828, 36035, 50449, 57656, 72070, 100898, 115312, 144140, 201796, 252245, 288280, 353143, 403592, 504490, 576560, 706286, 807184, 1008980, 1412572, 1765715, 2017960, 2825144, 3531430, 4035920, 5650288, 7062860, 14125720, 28251440]

約数ペア:

[(1, 28251440), (2, 14125720), (4, 7062860), (5, 5650288), (7, 4035920), (8, 3531430), (10, 2825144), (14, 2017960), (16, 1765715), (20, 1412572), (28, 1008980), (35, 807184), (40, 706286), (49, 576560), (56, 504490), (70, 403592), (80, 353143), (98, 288280), (112, 252245), (140, 201796), (196, 144140), (245, 115312), (280, 100898), (392, 72070), (490, 57656), (560, 50449), (784, 36035), (980, 28828), (1960, 14414), (3920, 7207)]