201205520

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1\times {\mathrm{263}}^1$

素因数の和:480

約数の個数: 80

約数和(自身を含む): 479647872

約数和(自身を除く): 278442352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 131, 146, 262, 263, 292, 365, 524, 526, 584, 655, 730, 1048, 1052, 1168, 1310, 1315, 1460, 2096, 2104, 2620, 2630, 2920, 4208, 5240, 5260, 5840, 9563, 10480, 10520, 19126, 19199, 21040, 34453, 38252, 38398, 47815, 68906, 76504, 76796, 95630, 95995, 137812, 153008, 153592, 172265, 191260, 191990, 275624, 307184, 344530, 382520, 383980, 551248, 689060, 765040, 767960, 1378120, 1535920, 2515069, 2756240, 5030138, 10060276, 12575345, 20120552, 25150690, 40241104, 50301380, 100602760, 201205520]

約数ペア:

[(1, 201205520), (2, 100602760), (4, 50301380), (5, 40241104), (8, 25150690), (10, 20120552), (16, 12575345), (20, 10060276), (40, 5030138), (73, 2756240), (80, 2515069), (131, 1535920), (146, 1378120), (262, 767960), (263, 765040), (292, 689060), (365, 551248), (524, 383980), (526, 382520), (584, 344530), (655, 307184), (730, 275624), (1048, 191990), (1052, 191260), (1168, 172265), (1310, 153592), (1315, 153008), (1460, 137812), (2096, 95995), (2104, 95630), (2620, 76796), (2630, 76504), (2920, 68906), (4208, 47815), (5240, 38398), (5260, 38252), (5840, 34453), (9563, 21040), (10480, 19199), (10520, 19126)]