205787920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{491}}^1$

素因数の和:561

約数の個数: 120

約数和(自身を含む): 535894272

約数和(自身を除く): 330106352

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 169, 208, 248, 260, 310, 338, 403, 491, 496, 520, 620, 676, 806, 845, 982, 1040, 1240, 1352, 1612, 1690, 1964, 2015, 2455, 2480, 2704, 3224, 3380, 3928, 4030, 4910, 5239, 6383, 6448, 6760, 7856, 8060, 9820, 10478, 12766, 13520, 15221, 16120, 19640, 20956, 25532, 26195, 30442, 31915, 32240, 39280, 41912, 51064, 52390, 60884, 63830, 76105, 82979, 83824, 102128, 104780, 121768, 127660, 152210, 165958, 197873, 209560, 243536, 255320, 304420, 331916, 395746, 414895, 419120, 510640, 608840, 663832, 791492, 829790, 989365, 1217680, 1327664, 1582984, 1659580, 1978730, 2572349, 3165968, 3319160, 3957460, 5144698, 6638320, 7914920, 10289396, 12861745, 15829840, 20578792, 25723490, 41157584, 51446980, 102893960, 205787920]

約数ペア:

[(1, 205787920), (2, 102893960), (4, 51446980), (5, 41157584), (8, 25723490), (10, 20578792), (13, 15829840), (16, 12861745), (20, 10289396), (26, 7914920), (31, 6638320), (40, 5144698), (52, 3957460), (62, 3319160), (65, 3165968), (80, 2572349), (104, 1978730), (124, 1659580), (130, 1582984), (155, 1327664), (169, 1217680), (208, 989365), (248, 829790), (260, 791492), (310, 663832), (338, 608840), (403, 510640), (491, 419120), (496, 414895), (520, 395746), (620, 331916), (676, 304420), (806, 255320), (845, 243536), (982, 209560), (1040, 197873), (1240, 165958), (1352, 152210), (1612, 127660), (1690, 121768), (1964, 104780), (2015, 102128), (2455, 83824), (2480, 82979), (2704, 76105), (3224, 63830), (3380, 60884), (3928, 52390), (4030, 51064), (4910, 41912), (5239, 39280), (6383, 32240), (6448, 31915), (6760, 30442), (7856, 26195), (8060, 25532), (9820, 20956), (10478, 19640), (12766, 16120), (13520, 15221)]