81439920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{113111}}^1$

素因数の和:113130

約数の個数: 60

約数和(自身を含む): 273504816

約数和(自身を除く): 192064896

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 113111, 226222, 339333, 452444, 565555, 678666, 904888, 1017999, 1131110, 1357332, 1696665, 1809776, 2035998, 2262220, 2714664, 3393330, 4071996, 4524440, 5089995, 5429328, 6786660, 8143992, 9048880, 10179990, 13573320, 16287984, 20359980, 27146640, 40719960, 81439920]

約数ペア:

[(1, 81439920), (2, 40719960), (3, 27146640), (4, 20359980), (5, 16287984), (6, 13573320), (8, 10179990), (9, 9048880), (10, 8143992), (12, 6786660), (15, 5429328), (16, 5089995), (18, 4524440), (20, 4071996), (24, 3393330), (30, 2714664), (36, 2262220), (40, 2035998), (45, 1809776), (48, 1696665), (60, 1357332), (72, 1131110), (80, 1017999), (90, 904888), (120, 678666), (144, 565555), (180, 452444), (240, 339333), (360, 226222), (720, 113111)]