21097965

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2999}}^1$

素因数の和:3081

約数の個数: 32

約数和(自身を含む): 39168000

約数和(自身を除く): 18070035

約数列:

[1, 3, 5, 7, 15, 21, 35, 67, 105, 201, 335, 469, 1005, 1407, 2345, 2999, 7035, 8997, 14995, 20993, 44985, 62979, 104965, 200933, 314895, 602799, 1004665, 1406531, 3013995, 4219593, 7032655, 21097965]

約数ペア:

[(1, 21097965), (3, 7032655), (5, 4219593), (7, 3013995), (15, 1406531), (21, 1004665), (35, 602799), (67, 314895), (105, 200933), (201, 104965), (335, 62979), (469, 44985), (1005, 20993), (1407, 14995), (2345, 8997), (2999, 7035)]