203991520

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{17957}}^1$

素因数の和:18043

約数の個数: 48

約数和(自身を含む): 488744928

約数和(自身を除く): 284753408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 2272, 2840, 5680, 11360, 17957, 35914, 71828, 89785, 143656, 179570, 287312, 359140, 574624, 718280, 1274947, 1436560, 2549894, 2873120, 5099788, 6374735, 10199576, 12749470, 20399152, 25498940, 40798304, 50997880, 101995760, 203991520]

約数ペア:

[(1, 203991520), (2, 101995760), (4, 50997880), (5, 40798304), (8, 25498940), (10, 20399152), (16, 12749470), (20, 10199576), (32, 6374735), (40, 5099788), (71, 2873120), (80, 2549894), (142, 1436560), (160, 1274947), (284, 718280), (355, 574624), (568, 359140), (710, 287312), (1136, 179570), (1420, 143656), (2272, 89785), (2840, 71828), (5680, 35914), (11360, 17957)]