21177990

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{78437}}^1$

素因数の和:78453

約数の個数: 32

約数和(自身を含む): 56475360

約数和(自身を除く): 35297370

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 270, 78437, 156874, 235311, 392185, 470622, 705933, 784370, 1176555, 1411866, 2117799, 2353110, 3529665, 4235598, 7059330, 10588995, 21177990]

約数ペア:

[(1, 21177990), (2, 10588995), (3, 7059330), (5, 4235598), (6, 3529665), (9, 2353110), (10, 2117799), (15, 1411866), (18, 1176555), (27, 784370), (30, 705933), (45, 470622), (54, 392185), (90, 235311), (135, 156874), (270, 78437)]