28030720

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{359}}^1$

素因数の和:441

約数の個数: 72

約数和(自身を含む): 68433120

約数和(自身を除く): 40402400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 359, 488, 610, 640, 718, 976, 1220, 1280, 1436, 1795, 1952, 2440, 2872, 3590, 3904, 4880, 5744, 7180, 7808, 9760, 11488, 14360, 15616, 19520, 21899, 22976, 28720, 39040, 43798, 45952, 57440, 78080, 87596, 91904, 109495, 114880, 175192, 218990, 229760, 350384, 437980, 459520, 700768, 875960, 1401536, 1751920, 2803072, 3503840, 5606144, 7007680, 14015360, 28030720]

約数ペア:

[(1, 28030720), (2, 14015360), (4, 7007680), (5, 5606144), (8, 3503840), (10, 2803072), (16, 1751920), (20, 1401536), (32, 875960), (40, 700768), (61, 459520), (64, 437980), (80, 350384), (122, 229760), (128, 218990), (160, 175192), (244, 114880), (256, 109495), (305, 91904), (320, 87596), (359, 78080), (488, 57440), (610, 45952), (640, 43798), (718, 39040), (976, 28720), (1220, 22976), (1280, 21899), (1436, 19520), (1795, 15616), (1952, 14360), (2440, 11488), (2872, 9760), (3590, 7808), (3904, 7180), (4880, 5744)]