19872440

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10139}}^1$

素因数の和:10164

約数の個数: 48

約数和(自身を含む): 52018200

約数和(自身を除く): 32145760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10139, 20278, 40556, 50695, 70973, 81112, 101390, 141946, 202780, 283892, 354865, 405560, 496811, 567784, 709730, 993622, 1419460, 1987244, 2484055, 2838920, 3974488, 4968110, 9936220, 19872440]

約数ペア:

[(1, 19872440), (2, 9936220), (4, 4968110), (5, 3974488), (7, 2838920), (8, 2484055), (10, 1987244), (14, 1419460), (20, 993622), (28, 709730), (35, 567784), (40, 496811), (49, 405560), (56, 354865), (70, 283892), (98, 202780), (140, 141946), (196, 101390), (245, 81112), (280, 70973), (392, 50695), (490, 40556), (980, 20278), (1960, 10139)]