18991600

素因数分解:

$2^4\times 5^2\times {\mathrm{79}}^1\times {\mathrm{601}}^1$

素因数の和:698

約数の個数: 60

約数和(自身を含む): 46281760

約数和(自身を除く): 27290160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 79, 80, 100, 158, 200, 316, 395, 400, 601, 632, 790, 1202, 1264, 1580, 1975, 2404, 3005, 3160, 3950, 4808, 6010, 6320, 7900, 9616, 12020, 15025, 15800, 24040, 30050, 31600, 47479, 48080, 60100, 94958, 120200, 189916, 237395, 240400, 379832, 474790, 759664, 949580, 1186975, 1899160, 2373950, 3798320, 4747900, 9495800, 18991600]

約数ペア:

[(1, 18991600), (2, 9495800), (4, 4747900), (5, 3798320), (8, 2373950), (10, 1899160), (16, 1186975), (20, 949580), (25, 759664), (40, 474790), (50, 379832), (79, 240400), (80, 237395), (100, 189916), (158, 120200), (200, 94958), (316, 60100), (395, 48080), (400, 47479), (601, 31600), (632, 30050), (790, 24040), (1202, 15800), (1264, 15025), (1580, 12020), (1975, 9616), (2404, 7900), (3005, 6320), (3160, 6010), (3950, 4808)]