20147800

素因数分解:

$2^3\times 5^2\times {\mathrm{131}}^1\times {\mathrm{769}}^1$

素因数の和:916

約数の個数: 48

約数和(自身を含む): 47262600

約数和(自身を除く): 27114800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 131, 200, 262, 524, 655, 769, 1048, 1310, 1538, 2620, 3076, 3275, 3845, 5240, 6152, 6550, 7690, 13100, 15380, 19225, 26200, 30760, 38450, 76900, 100739, 153800, 201478, 402956, 503695, 805912, 1007390, 2014780, 2518475, 4029560, 5036950, 10073900, 20147800]

約数ペア:

[(1, 20147800), (2, 10073900), (4, 5036950), (5, 4029560), (8, 2518475), (10, 2014780), (20, 1007390), (25, 805912), (40, 503695), (50, 402956), (100, 201478), (131, 153800), (200, 100739), (262, 76900), (524, 38450), (655, 30760), (769, 26200), (1048, 19225), (1310, 15380), (1538, 13100), (2620, 7690), (3076, 6550), (3275, 6152), (3845, 5240)]