18043600

素因数分解:

$2^4\times 5^2\times {\mathrm{79}}^1\times {\mathrm{571}}^1$

素因数の和:668

約数の個数: 60

約数和(自身を含む): 43975360

約数和(自身を除く): 25931760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 79, 80, 100, 158, 200, 316, 395, 400, 571, 632, 790, 1142, 1264, 1580, 1975, 2284, 2855, 3160, 3950, 4568, 5710, 6320, 7900, 9136, 11420, 14275, 15800, 22840, 28550, 31600, 45109, 45680, 57100, 90218, 114200, 180436, 225545, 228400, 360872, 451090, 721744, 902180, 1127725, 1804360, 2255450, 3608720, 4510900, 9021800, 18043600]

約数ペア:

[(1, 18043600), (2, 9021800), (4, 4510900), (5, 3608720), (8, 2255450), (10, 1804360), (16, 1127725), (20, 902180), (25, 721744), (40, 451090), (50, 360872), (79, 228400), (80, 225545), (100, 180436), (158, 114200), (200, 90218), (316, 57100), (395, 45680), (400, 45109), (571, 31600), (632, 28550), (790, 22840), (1142, 15800), (1264, 14275), (1580, 11420), (1975, 9136), (2284, 7900), (2855, 6320), (3160, 5710), (3950, 4568)]