31144420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1999}}^1$

素因数の和:2068

約数の個数: 48

約数和(自身を含む): 70560000

約数和(自身を除く): 39415580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 190, 205, 380, 410, 779, 820, 1558, 1999, 3116, 3895, 3998, 7790, 7996, 9995, 15580, 19990, 37981, 39980, 75962, 81959, 151924, 163918, 189905, 327836, 379810, 409795, 759620, 819590, 1557221, 1639180, 3114442, 6228884, 7786105, 15572210, 31144420]

約数ペア:

[(1, 31144420), (2, 15572210), (4, 7786105), (5, 6228884), (10, 3114442), (19, 1639180), (20, 1557221), (38, 819590), (41, 759620), (76, 409795), (82, 379810), (95, 327836), (164, 189905), (190, 163918), (205, 151924), (380, 81959), (410, 75962), (779, 39980), (820, 37981), (1558, 19990), (1999, 15580), (3116, 9995), (3895, 7996), (3998, 7790)]