18210607600

素因数分解:

$2^4\times 5^2\times {\mathrm{421}}^1\times {\mathrm{108139}}^1$

素因数の和:108578

約数の個数: 60

約数和(自身を含む): 43855311880

約数和(自身を除く): 25644704280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 421, 842, 1684, 2105, 3368, 4210, 6736, 8420, 10525, 16840, 21050, 33680, 42100, 84200, 108139, 168400, 216278, 432556, 540695, 865112, 1081390, 1730224, 2162780, 2703475, 4325560, 5406950, 8651120, 10813900, 21627800, 43255600, 45526519, 91053038, 182106076, 227632595, 364212152, 455265190, 728424304, 910530380, 1138162975, 1821060760, 2276325950, 3642121520, 4552651900, 9105303800, 18210607600]

約数ペア:

[(1, 18210607600), (2, 9105303800), (4, 4552651900), (5, 3642121520), (8, 2276325950), (10, 1821060760), (16, 1138162975), (20, 910530380), (25, 728424304), (40, 455265190), (50, 364212152), (80, 227632595), (100, 182106076), (200, 91053038), (400, 45526519), (421, 43255600), (842, 21627800), (1684, 10813900), (2105, 8651120), (3368, 5406950), (4210, 4325560), (6736, 2703475), (8420, 2162780), (10525, 1730224), (16840, 1081390), (21050, 865112), (33680, 540695), (42100, 432556), (84200, 216278), (108139, 168400)]