71999440

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{16981}}^1$

素因数の和:17047

約数の個数: 40

約数和(自身を含む): 170567208

約数和(自身を除く): 98567768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 16981, 33962, 67924, 84905, 135848, 169810, 271696, 339620, 679240, 899993, 1358480, 1799986, 3599972, 4499965, 7199944, 8999930, 14399888, 17999860, 35999720, 71999440]

約数ペア:

[(1, 71999440), (2, 35999720), (4, 17999860), (5, 14399888), (8, 8999930), (10, 7199944), (16, 4499965), (20, 3599972), (40, 1799986), (53, 1358480), (80, 899993), (106, 679240), (212, 339620), (265, 271696), (424, 169810), (530, 135848), (848, 84905), (1060, 67924), (2120, 33962), (4240, 16981)]