981240520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{2099}}^1$

素因数の和:2183

約数の個数: 128

約数和(自身を含む): 2540160000

約数和(自身を除く): 1558919480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 29, 31, 40, 52, 58, 62, 65, 104, 116, 124, 130, 145, 155, 232, 248, 260, 290, 310, 377, 403, 520, 580, 620, 754, 806, 899, 1160, 1240, 1508, 1612, 1798, 1885, 2015, 2099, 3016, 3224, 3596, 3770, 4030, 4198, 4495, 7192, 7540, 8060, 8396, 8990, 10495, 11687, 15080, 16120, 16792, 17980, 20990, 23374, 27287, 35960, 41980, 46748, 54574, 58435, 60871, 65069, 83960, 93496, 109148, 116870, 121742, 130138, 136435, 218296, 233740, 243484, 260276, 272870, 304355, 325345, 467480, 486968, 520552, 545740, 608710, 650690, 791323, 845897, 1091480, 1217420, 1301380, 1582646, 1691794, 1887001, 2434840, 2602760, 3165292, 3383588, 3774002, 3956615, 4229485, 6330584, 6767176, 7548004, 7913230, 8458970, 9435005, 15096008, 15826460, 16917940, 18870010, 24531013, 31652920, 33835880, 37740020, 49062026, 75480040, 98124052, 122655065, 196248104, 245310130, 490620260, 981240520]

約数ペア:

[(1, 981240520), (2, 490620260), (4, 245310130), (5, 196248104), (8, 122655065), (10, 98124052), (13, 75480040), (20, 49062026), (26, 37740020), (29, 33835880), (31, 31652920), (40, 24531013), (52, 18870010), (58, 16917940), (62, 15826460), (65, 15096008), (104, 9435005), (116, 8458970), (124, 7913230), (130, 7548004), (145, 6767176), (155, 6330584), (232, 4229485), (248, 3956615), (260, 3774002), (290, 3383588), (310, 3165292), (377, 2602760), (403, 2434840), (520, 1887001), (580, 1691794), (620, 1582646), (754, 1301380), (806, 1217420), (899, 1091480), (1160, 845897), (1240, 791323), (1508, 650690), (1612, 608710), (1798, 545740), (1885, 520552), (2015, 486968), (2099, 467480), (3016, 325345), (3224, 304355), (3596, 272870), (3770, 260276), (4030, 243484), (4198, 233740), (4495, 218296), (7192, 136435), (7540, 130138), (8060, 121742), (8396, 116870), (8990, 109148), (10495, 93496), (11687, 83960), (15080, 65069), (16120, 60871), (16792, 58435), (17980, 54574), (20990, 46748), (23374, 41980), (27287, 35960)]