18886420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{431}}^1$

素因数の和:760

約数の個数: 48

約数和(自身を含む): 45577728

約数和(自身を除く): 26691308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 313, 431, 626, 862, 1252, 1565, 1724, 2155, 2191, 3017, 3130, 4310, 4382, 6034, 6260, 8620, 8764, 10955, 12068, 15085, 21910, 30170, 43820, 60340, 134903, 269806, 539612, 674515, 944321, 1349030, 1888642, 2698060, 3777284, 4721605, 9443210, 18886420]

約数ペア:

[(1, 18886420), (2, 9443210), (4, 4721605), (5, 3777284), (7, 2698060), (10, 1888642), (14, 1349030), (20, 944321), (28, 674515), (35, 539612), (70, 269806), (140, 134903), (313, 60340), (431, 43820), (626, 30170), (862, 21910), (1252, 15085), (1565, 12068), (1724, 10955), (2155, 8764), (2191, 8620), (3017, 6260), (3130, 6034), (4310, 4382)]