81665160

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{757}}^1$

素因数の和:831

約数の個数: 128

約数和(自身を含む): 261964800

約数和(自身を除く): 180299640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 31, 40, 58, 60, 62, 87, 93, 116, 120, 124, 145, 155, 174, 186, 232, 248, 290, 310, 348, 372, 435, 465, 580, 620, 696, 744, 757, 870, 899, 930, 1160, 1240, 1514, 1740, 1798, 1860, 2271, 2697, 3028, 3480, 3596, 3720, 3785, 4495, 4542, 5394, 6056, 7192, 7570, 8990, 9084, 10788, 11355, 13485, 15140, 17980, 18168, 21576, 21953, 22710, 23467, 26970, 30280, 35960, 43906, 45420, 46934, 53940, 65859, 70401, 87812, 90840, 93868, 107880, 109765, 117335, 131718, 140802, 175624, 187736, 219530, 234670, 263436, 281604, 329295, 352005, 439060, 469340, 526872, 563208, 658590, 680543, 704010, 878120, 938680, 1317180, 1361086, 1408020, 2041629, 2634360, 2722172, 2816040, 3402715, 4083258, 5444344, 6805430, 8166516, 10208145, 13610860, 16333032, 20416290, 27221720, 40832580, 81665160]

約数ペア:

[(1, 81665160), (2, 40832580), (3, 27221720), (4, 20416290), (5, 16333032), (6, 13610860), (8, 10208145), (10, 8166516), (12, 6805430), (15, 5444344), (20, 4083258), (24, 3402715), (29, 2816040), (30, 2722172), (31, 2634360), (40, 2041629), (58, 1408020), (60, 1361086), (62, 1317180), (87, 938680), (93, 878120), (116, 704010), (120, 680543), (124, 658590), (145, 563208), (155, 526872), (174, 469340), (186, 439060), (232, 352005), (248, 329295), (290, 281604), (310, 263436), (348, 234670), (372, 219530), (435, 187736), (465, 175624), (580, 140802), (620, 131718), (696, 117335), (744, 109765), (757, 107880), (870, 93868), (899, 90840), (930, 87812), (1160, 70401), (1240, 65859), (1514, 53940), (1740, 46934), (1798, 45420), (1860, 43906), (2271, 35960), (2697, 30280), (3028, 26970), (3480, 23467), (3596, 22710), (3720, 21953), (3785, 21576), (4495, 18168), (4542, 17980), (5394, 15140), (6056, 13485), (7192, 11355), (7570, 10788), (8990, 9084)]