21135784

素因数分解:

$2^3\times {\mathrm{83}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 40572000

約数和(自身を除く): 19436216

約数列:

[1, 2, 4, 8, 83, 139, 166, 229, 278, 332, 458, 556, 664, 916, 1112, 1832, 11537, 19007, 23074, 31831, 38014, 46148, 63662, 76028, 92296, 127324, 152056, 254648, 2641973, 5283946, 10567892, 21135784]

約数ペア:

[(1, 21135784), (2, 10567892), (4, 5283946), (8, 2641973), (83, 254648), (139, 152056), (166, 127324), (229, 92296), (278, 76028), (332, 63662), (458, 46148), (556, 38014), (664, 31831), (916, 23074), (1112, 19007), (1832, 11537)]