128529200

素因数分解:

$2^4\times 5^2\times {\mathrm{321323}}^1$

素因数の和:321341

約数の個数: 30

約数和(自身を含む): 308792364

約数和(自身を除く): 180263164

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 321323, 642646, 1285292, 1606615, 2570584, 3213230, 5141168, 6426460, 8033075, 12852920, 16066150, 25705840, 32132300, 64264600, 128529200]

約数ペア:

[(1, 128529200), (2, 64264600), (4, 32132300), (5, 25705840), (8, 16066150), (10, 12852920), (16, 8033075), (20, 6426460), (25, 5141168), (40, 3213230), (50, 2570584), (80, 1606615), (100, 1285292), (200, 642646), (400, 321323)]