21356784

素因数分解:

$2^4\times 3^6\times {\mathrm{1831}}^1$

素因数の和:1857

約数の個数: 70

約数和(自身を含む): 62073656

約数和(自身を除く): 40716872

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 81, 108, 144, 162, 216, 243, 324, 432, 486, 648, 729, 972, 1296, 1458, 1831, 1944, 2916, 3662, 3888, 5493, 5832, 7324, 10986, 11664, 14648, 16479, 21972, 29296, 32958, 43944, 49437, 65916, 87888, 98874, 131832, 148311, 197748, 263664, 296622, 395496, 444933, 593244, 790992, 889866, 1186488, 1334799, 1779732, 2372976, 2669598, 3559464, 5339196, 7118928, 10678392, 21356784]

約数ペア:

[(1, 21356784), (2, 10678392), (3, 7118928), (4, 5339196), (6, 3559464), (8, 2669598), (9, 2372976), (12, 1779732), (16, 1334799), (18, 1186488), (24, 889866), (27, 790992), (36, 593244), (48, 444933), (54, 395496), (72, 296622), (81, 263664), (108, 197748), (144, 148311), (162, 131832), (216, 98874), (243, 87888), (324, 65916), (432, 49437), (486, 43944), (648, 32958), (729, 29296), (972, 21972), (1296, 16479), (1458, 14648), (1831, 11664), (1944, 10986), (2916, 7324), (3662, 5832), (3888, 5493)]