18581567440

素因数分解:

$2^4\times 5^1\times {\mathrm{6781}}^1\times {\mathrm{34253}}^1$

素因数の和:41047

約数の個数: 40

約数和(自身を含む): 43209776808

約数和(自身を除く): 24628209368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 6781, 13562, 27124, 33905, 34253, 54248, 67810, 68506, 108496, 135620, 137012, 171265, 271240, 274024, 342530, 542480, 548048, 685060, 1370120, 2740240, 232269593, 464539186, 929078372, 1161347965, 1858156744, 2322695930, 3716313488, 4645391860, 9290783720, 18581567440]

約数ペア:

[(1, 18581567440), (2, 9290783720), (4, 4645391860), (5, 3716313488), (8, 2322695930), (10, 1858156744), (16, 1161347965), (20, 929078372), (40, 464539186), (80, 232269593), (6781, 2740240), (13562, 1370120), (27124, 685060), (33905, 548048), (34253, 542480), (54248, 342530), (67810, 274024), (68506, 271240), (108496, 171265), (135620, 137012)]