25494220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{449}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 57153600

約数和(自身を除く): 31659380

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 167, 170, 334, 340, 449, 668, 835, 898, 1670, 1796, 2245, 2839, 3340, 4490, 5678, 7633, 8980, 11356, 14195, 15266, 28390, 30532, 38165, 56780, 74983, 76330, 149966, 152660, 299932, 374915, 749830, 1274711, 1499660, 2549422, 5098844, 6373555, 12747110, 25494220]

約数ペア:

[(1, 25494220), (2, 12747110), (4, 6373555), (5, 5098844), (10, 2549422), (17, 1499660), (20, 1274711), (34, 749830), (68, 374915), (85, 299932), (167, 152660), (170, 149966), (334, 76330), (340, 74983), (449, 56780), (668, 38165), (835, 30532), (898, 28390), (1670, 15266), (1796, 14195), (2245, 11356), (2839, 8980), (3340, 7633), (4490, 5678)]