19109000

素因数分解:

$2^3\times 5^3\times {\mathrm{97}}^1\times {\mathrm{197}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 45405360

約数和(自身を除く): 26296360

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 97, 100, 125, 194, 197, 200, 250, 388, 394, 485, 500, 776, 788, 970, 985, 1000, 1576, 1940, 1970, 2425, 3880, 3940, 4850, 4925, 7880, 9700, 9850, 12125, 19109, 19400, 19700, 24250, 24625, 38218, 39400, 48500, 49250, 76436, 95545, 97000, 98500, 152872, 191090, 197000, 382180, 477725, 764360, 955450, 1910900, 2388625, 3821800, 4777250, 9554500, 19109000]

約数ペア:

[(1, 19109000), (2, 9554500), (4, 4777250), (5, 3821800), (8, 2388625), (10, 1910900), (20, 955450), (25, 764360), (40, 477725), (50, 382180), (97, 197000), (100, 191090), (125, 152872), (194, 98500), (197, 97000), (200, 95545), (250, 76436), (388, 49250), (394, 48500), (485, 39400), (500, 38218), (776, 24625), (788, 24250), (970, 19700), (985, 19400), (1000, 19109), (1576, 12125), (1940, 9850), (1970, 9700), (2425, 7880), (3880, 4925), (3940, 4850)]