18011120

素因数分解:

$2^4\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1511}}^1$

素因数の和:1673

約数の個数: 40

約数和(自身を含む): 42184800

約数和(自身を除く): 24173680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 149, 298, 596, 745, 1192, 1490, 1511, 2384, 2980, 3022, 5960, 6044, 7555, 11920, 12088, 15110, 24176, 30220, 60440, 120880, 225139, 450278, 900556, 1125695, 1801112, 2251390, 3602224, 4502780, 9005560, 18011120]

約数ペア:

[(1, 18011120), (2, 9005560), (4, 4502780), (5, 3602224), (8, 2251390), (10, 1801112), (16, 1125695), (20, 900556), (40, 450278), (80, 225139), (149, 120880), (298, 60440), (596, 30220), (745, 24176), (1192, 15110), (1490, 12088), (1511, 11920), (2384, 7555), (2980, 6044), (3022, 5960)]