221342480

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{599}}^1$

素因数の和:792

約数の個数: 80

約数和(自身を含む): 535680000

約数和(自身を除く): 314337520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 149, 155, 248, 298, 310, 496, 596, 599, 620, 745, 1192, 1198, 1240, 1490, 2384, 2396, 2480, 2980, 2995, 4619, 4792, 5960, 5990, 9238, 9584, 11920, 11980, 18476, 18569, 23095, 23960, 36952, 37138, 46190, 47920, 73904, 74276, 89251, 92380, 92845, 148552, 178502, 184760, 185690, 297104, 357004, 369520, 371380, 446255, 714008, 742760, 892510, 1428016, 1485520, 1785020, 2766781, 3570040, 5533562, 7140080, 11067124, 13833905, 22134248, 27667810, 44268496, 55335620, 110671240, 221342480]

約数ペア:

[(1, 221342480), (2, 110671240), (4, 55335620), (5, 44268496), (8, 27667810), (10, 22134248), (16, 13833905), (20, 11067124), (31, 7140080), (40, 5533562), (62, 3570040), (80, 2766781), (124, 1785020), (149, 1485520), (155, 1428016), (248, 892510), (298, 742760), (310, 714008), (496, 446255), (596, 371380), (599, 369520), (620, 357004), (745, 297104), (1192, 185690), (1198, 184760), (1240, 178502), (1490, 148552), (2384, 92845), (2396, 92380), (2480, 89251), (2980, 74276), (2995, 73904), (4619, 47920), (4792, 46190), (5960, 37138), (5990, 36952), (9238, 23960), (9584, 23095), (11920, 18569), (11980, 18476)]