81421330

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{439}}^1\times {\mathrm{1091}}^1$

素因数の和:1554

約数の個数: 32

約数和(自身を含む): 155675520

約数和(自身を除く): 74254190

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 439, 878, 1091, 2182, 2195, 4390, 5455, 7463, 10910, 14926, 18547, 37094, 37315, 74630, 92735, 185470, 478949, 957898, 2394745, 4789490, 8142133, 16284266, 40710665, 81421330]

約数ペア:

[(1, 81421330), (2, 40710665), (5, 16284266), (10, 8142133), (17, 4789490), (34, 2394745), (85, 957898), (170, 478949), (439, 185470), (878, 92735), (1091, 74630), (2182, 37315), (2195, 37094), (4390, 18547), (5455, 14926), (7463, 10910)]