205945100

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:423

約数の個数: 72

約数和(自身を含む): 458304000

約数和(自身を除く): 252358900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 131, 158, 199, 262, 316, 395, 398, 524, 655, 790, 796, 995, 1310, 1580, 1975, 1990, 2620, 3275, 3950, 3980, 4975, 6550, 7900, 9950, 10349, 13100, 15721, 19900, 20698, 26069, 31442, 41396, 51745, 52138, 62884, 78605, 103490, 104276, 130345, 157210, 206980, 258725, 260690, 314420, 393025, 517450, 521380, 651725, 786050, 1034900, 1303450, 1572100, 2059451, 2606900, 4118902, 8237804, 10297255, 20594510, 41189020, 51486275, 102972550, 205945100]

約数ペア:

[(1, 205945100), (2, 102972550), (4, 51486275), (5, 41189020), (10, 20594510), (20, 10297255), (25, 8237804), (50, 4118902), (79, 2606900), (100, 2059451), (131, 1572100), (158, 1303450), (199, 1034900), (262, 786050), (316, 651725), (395, 521380), (398, 517450), (524, 393025), (655, 314420), (790, 260690), (796, 258725), (995, 206980), (1310, 157210), (1580, 130345), (1975, 104276), (1990, 103490), (2620, 78605), (3275, 62884), (3950, 52138), (3980, 51745), (4975, 41396), (6550, 31442), (7900, 26069), (9950, 20698), (10349, 19900), (13100, 15721)]