19980975

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{5437}}^1$

素因数の和:5464

約数の個数: 36

約数和(自身を含む): 38435784

約数和(自身を除く): 18454809

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 147, 175, 245, 525, 735, 1225, 3675, 5437, 16311, 27185, 38059, 81555, 114177, 135925, 190295, 266413, 407775, 570885, 799239, 951475, 1332065, 2854425, 3996195, 6660325, 19980975]

約数ペア:

[(1, 19980975), (3, 6660325), (5, 3996195), (7, 2854425), (15, 1332065), (21, 951475), (25, 799239), (35, 570885), (49, 407775), (75, 266413), (105, 190295), (147, 135925), (175, 114177), (245, 81555), (525, 38059), (735, 27185), (1225, 16311), (3675, 5437)]