21354130

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1187}}^1$

素因数の和:1458

約数の個数: 32

約数和(自身を含む): 44136576

約数和(自身を除く): 22782446

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 257, 514, 1187, 1285, 1799, 2374, 2570, 3598, 5935, 8309, 8995, 11870, 16618, 17990, 41545, 83090, 305059, 610118, 1525295, 2135413, 3050590, 4270826, 10677065, 21354130]

約数ペア:

[(1, 21354130), (2, 10677065), (5, 4270826), (7, 3050590), (10, 2135413), (14, 1525295), (35, 610118), (70, 305059), (257, 83090), (514, 41545), (1187, 17990), (1285, 16618), (1799, 11870), (2374, 8995), (2570, 8309), (3598, 5935)]