21473440

素因数分解:

$2^5\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1303}}^1$

素因数の和:1421

約数の個数: 48

約数和(自身を含む): 51262848

約数和(自身を除く): 29789408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 103, 160, 206, 412, 515, 824, 1030, 1303, 1648, 2060, 2606, 3296, 4120, 5212, 6515, 8240, 10424, 13030, 16480, 20848, 26060, 41696, 52120, 104240, 134209, 208480, 268418, 536836, 671045, 1073672, 1342090, 2147344, 2684180, 4294688, 5368360, 10736720, 21473440]

約数ペア:

[(1, 21473440), (2, 10736720), (4, 5368360), (5, 4294688), (8, 2684180), (10, 2147344), (16, 1342090), (20, 1073672), (32, 671045), (40, 536836), (80, 268418), (103, 208480), (160, 134209), (206, 104240), (412, 52120), (515, 41696), (824, 26060), (1030, 20848), (1303, 16480), (1648, 13030), (2060, 10424), (2606, 8240), (3296, 6515), (4120, 5212)]