20698000

素因数分解:

$2^4\times 5^3\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:233

約数の個数: 80

約数和(自身を含む): 51068160

約数和(自身を除く): 30370160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 79, 80, 100, 125, 131, 158, 200, 250, 262, 316, 395, 400, 500, 524, 632, 655, 790, 1000, 1048, 1264, 1310, 1580, 1975, 2000, 2096, 2620, 3160, 3275, 3950, 5240, 6320, 6550, 7900, 9875, 10349, 10480, 13100, 15800, 16375, 19750, 20698, 26200, 31600, 32750, 39500, 41396, 51745, 52400, 65500, 79000, 82792, 103490, 131000, 158000, 165584, 206980, 258725, 262000, 413960, 517450, 827920, 1034900, 1293625, 2069800, 2587250, 4139600, 5174500, 10349000, 20698000]

約数ペア:

[(1, 20698000), (2, 10349000), (4, 5174500), (5, 4139600), (8, 2587250), (10, 2069800), (16, 1293625), (20, 1034900), (25, 827920), (40, 517450), (50, 413960), (79, 262000), (80, 258725), (100, 206980), (125, 165584), (131, 158000), (158, 131000), (200, 103490), (250, 82792), (262, 79000), (316, 65500), (395, 52400), (400, 51745), (500, 41396), (524, 39500), (632, 32750), (655, 31600), (790, 26200), (1000, 20698), (1048, 19750), (1264, 16375), (1310, 15800), (1580, 13100), (1975, 10480), (2000, 10349), (2096, 9875), (2620, 7900), (3160, 6550), (3275, 6320), (3950, 5240)]