245405720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{125207}}^1$

素因数の和:125232

約数の個数: 48

約数和(自身を含む): 642317040

約数和(自身を除く): 396911320

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, 125207, 250414, 500828, 626035, 876449, 1001656, 1252070, 1752898, 2504140, 3505796, 4382245, 5008280, 6135143, 7011592, 8764490, 12270286, 17528980, 24540572, 30675715, 35057960, 49081144, 61351430, 122702860, 245405720]

約数ペア:

[(1, 245405720), (2, 122702860), (4, 61351430), (5, 49081144), (7, 35057960), (8, 30675715), (10, 24540572), (14, 17528980), (20, 12270286), (28, 8764490), (35, 7011592), (40, 6135143), (49, 5008280), (56, 4382245), (70, 3505796), (98, 2504140), (140, 1752898), (196, 1252070), (245, 1001656), (280, 876449), (392, 626035), (490, 500828), (980, 250414), (1960, 125207)]