64161200

素因数分解:

$2^4\times 5^2\times {\mathrm{160403}}^1$

素因数の和:160421

約数の個数: 30

約数和(自身を含む): 154148244

約数和(自身を除く): 89987044

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 160403, 320806, 641612, 802015, 1283224, 1604030, 2566448, 3208060, 4010075, 6416120, 8020150, 12832240, 16040300, 32080600, 64161200]

約数ペア:

[(1, 64161200), (2, 32080600), (4, 16040300), (5, 12832240), (8, 8020150), (10, 6416120), (16, 4010075), (20, 3208060), (25, 2566448), (40, 1604030), (50, 1283224), (80, 802015), (100, 641612), (200, 320806), (400, 160403)]