21705732

素因数分解:

$2^2\times 3^5\times {\mathrm{137}}^1\times {\mathrm{163}}^1$

素因数の和:319

約数の個数: 72

約数和(自身を含む): 57666336

約数和(自身を除く): 35960604

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 137, 162, 163, 243, 274, 324, 326, 411, 486, 489, 548, 652, 822, 972, 978, 1233, 1467, 1644, 1956, 2466, 2934, 3699, 4401, 4932, 5868, 7398, 8802, 11097, 13203, 14796, 17604, 22194, 22331, 26406, 33291, 39609, 44388, 44662, 52812, 66582, 66993, 79218, 89324, 133164, 133986, 158436, 200979, 267972, 401958, 602937, 803916, 1205874, 1808811, 2411748, 3617622, 5426433, 7235244, 10852866, 21705732]

約数ペア:

[(1, 21705732), (2, 10852866), (3, 7235244), (4, 5426433), (6, 3617622), (9, 2411748), (12, 1808811), (18, 1205874), (27, 803916), (36, 602937), (54, 401958), (81, 267972), (108, 200979), (137, 158436), (162, 133986), (163, 133164), (243, 89324), (274, 79218), (324, 66993), (326, 66582), (411, 52812), (486, 44662), (489, 44388), (548, 39609), (652, 33291), (822, 26406), (972, 22331), (978, 22194), (1233, 17604), (1467, 14796), (1644, 13203), (1956, 11097), (2466, 8802), (2934, 7398), (3699, 5868), (4401, 4932)]