199978020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{100999}}^1$

素因数の和:101025

約数の個数: 72

約数和(自身を含む): 661752000

約数和(自身を除く): 461773980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 100999, 201998, 302997, 403996, 504995, 605994, 908991, 1009990, 1110989, 1211988, 1514985, 1817982, 2019980, 2221978, 3029970, 3332967, 3635964, 4443956, 4544955, 5554945, 6059940, 6665934, 9089910, 9998901, 11109890, 13331868, 16664835, 18179820, 19997802, 22219780, 33329670, 39995604, 49994505, 66659340, 99989010, 199978020]

約数ペア:

[(1, 199978020), (2, 99989010), (3, 66659340), (4, 49994505), (5, 39995604), (6, 33329670), (9, 22219780), (10, 19997802), (11, 18179820), (12, 16664835), (15, 13331868), (18, 11109890), (20, 9998901), (22, 9089910), (30, 6665934), (33, 6059940), (36, 5554945), (44, 4544955), (45, 4443956), (55, 3635964), (60, 3332967), (66, 3029970), (90, 2221978), (99, 2019980), (110, 1817982), (132, 1514985), (165, 1211988), (180, 1110989), (198, 1009990), (220, 908991), (330, 605994), (396, 504995), (495, 403996), (660, 302997), (990, 201998), (1980, 100999)]