28320040

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{14449}}^1$

素因数の和:14474

約数の個数: 48

約数和(自身を含む): 74128500

約数和(自身を除く): 45808460

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, 14449, 28898, 57796, 72245, 101143, 115592, 144490, 202286, 288980, 404572, 505715, 577960, 708001, 809144, 1011430, 1416002, 2022860, 2832004, 3540005, 4045720, 5664008, 7080010, 14160020, 28320040]

約数ペア:

[(1, 28320040), (2, 14160020), (4, 7080010), (5, 5664008), (7, 4045720), (8, 3540005), (10, 2832004), (14, 2022860), (20, 1416002), (28, 1011430), (35, 809144), (40, 708001), (49, 577960), (56, 505715), (70, 404572), (98, 288980), (140, 202286), (196, 144490), (245, 115592), (280, 101143), (392, 72245), (490, 57796), (980, 28898), (1960, 14449)]