21418810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{439}}^1$

素因数の和:511

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 26481350

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 41, 70, 82, 85, 119, 170, 205, 238, 287, 410, 439, 574, 595, 697, 878, 1190, 1394, 1435, 2195, 2870, 3073, 3485, 4390, 4879, 6146, 6970, 7463, 9758, 14926, 15365, 17999, 24395, 30730, 35998, 37315, 48790, 52241, 74630, 89995, 104482, 125993, 179990, 251986, 261205, 305983, 522410, 611966, 629965, 1259930, 1529915, 2141881, 3059830, 4283762, 10709405, 21418810]

約数ペア:

[(1, 21418810), (2, 10709405), (5, 4283762), (7, 3059830), (10, 2141881), (14, 1529915), (17, 1259930), (34, 629965), (35, 611966), (41, 522410), (70, 305983), (82, 261205), (85, 251986), (119, 179990), (170, 125993), (205, 104482), (238, 89995), (287, 74630), (410, 52241), (439, 48790), (574, 37315), (595, 35998), (697, 30730), (878, 24395), (1190, 17999), (1394, 15365), (1435, 14926), (2195, 9758), (2870, 7463), (3073, 6970), (3485, 6146), (4390, 4879)]