18910880

素因数分解:

$2^5\times 5^1\times {\mathrm{181}}^1\times {\mathrm{653}}^1$

素因数の和:849

約数の個数: 48

約数和(自身を含む): 44992584

約数和(自身を除く): 26081704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 181, 362, 653, 724, 905, 1306, 1448, 1810, 2612, 2896, 3265, 3620, 5224, 5792, 6530, 7240, 10448, 13060, 14480, 20896, 26120, 28960, 52240, 104480, 118193, 236386, 472772, 590965, 945544, 1181930, 1891088, 2363860, 3782176, 4727720, 9455440, 18910880]

約数ペア:

[(1, 18910880), (2, 9455440), (4, 4727720), (5, 3782176), (8, 2363860), (10, 1891088), (16, 1181930), (20, 945544), (32, 590965), (40, 472772), (80, 236386), (160, 118193), (181, 104480), (362, 52240), (653, 28960), (724, 26120), (905, 20896), (1306, 14480), (1448, 13060), (1810, 10448), (2612, 7240), (2896, 6530), (3265, 5792), (3620, 5224)]