20817125

素因数分解:

$5^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{643}}^1$

素因数の和:702

約数の個数: 32

約数和(自身を含む): 30541056

約数和(自身を除く): 9723931

約数列:

[1, 5, 7, 25, 35, 37, 125, 175, 185, 259, 643, 875, 925, 1295, 3215, 4501, 4625, 6475, 16075, 22505, 23791, 32375, 80375, 112525, 118955, 166537, 562625, 594775, 832685, 2973875, 4163425, 20817125]

約数ペア:

[(1, 20817125), (5, 4163425), (7, 2973875), (25, 832685), (35, 594775), (37, 562625), (125, 166537), (175, 118955), (185, 112525), (259, 80375), (643, 32375), (875, 23791), (925, 22505), (1295, 16075), (3215, 6475), (4501, 4625)]