71709981

素因数分解:

$3^1\times 7^3\times {\mathrm{227}}^1\times {\mathrm{307}}^1$

素因数の和:558

約数の個数: 32

約数和(自身を含む): 112358400

約数和(自身を除く): 40648419

約数列:

[1, 3, 7, 21, 49, 147, 227, 307, 343, 681, 921, 1029, 1589, 2149, 4767, 6447, 11123, 15043, 33369, 45129, 69689, 77861, 105301, 209067, 233583, 315903, 487823, 1463469, 3414761, 10244283, 23903327, 71709981]

約数ペア:

[(1, 71709981), (3, 23903327), (7, 10244283), (21, 3414761), (49, 1463469), (147, 487823), (227, 315903), (307, 233583), (343, 209067), (681, 105301), (921, 77861), (1029, 69689), (1589, 45129), (2149, 33369), (4767, 15043), (6447, 11123)]