81785480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{292091}}^1$

素因数の和:292109

約数の個数: 32

約数和(自身を含む): 210306240

約数和(自身を除く): 128520760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 292091, 584182, 1168364, 1460455, 2044637, 2336728, 2920910, 4089274, 5841820, 8178548, 10223185, 11683640, 16357096, 20446370, 40892740, 81785480]

約数ペア:

[(1, 81785480), (2, 40892740), (4, 20446370), (5, 16357096), (7, 11683640), (8, 10223185), (10, 8178548), (14, 5841820), (20, 4089274), (28, 2920910), (35, 2336728), (40, 2044637), (56, 1460455), (70, 1168364), (140, 584182), (280, 292091)]