258771640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{199}}^1$

素因数の和:317

約数の個数: 128

約数和(自身を含む): 648000000

約数和(自身を除く): 389228360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 29, 38, 40, 58, 59, 76, 95, 116, 118, 145, 152, 190, 199, 232, 236, 290, 295, 380, 398, 472, 551, 580, 590, 760, 796, 995, 1102, 1121, 1160, 1180, 1592, 1711, 1990, 2204, 2242, 2360, 2755, 3422, 3781, 3980, 4408, 4484, 5510, 5605, 5771, 6844, 7562, 7960, 8555, 8968, 11020, 11210, 11542, 11741, 13688, 15124, 17110, 18905, 22040, 22420, 23084, 23482, 28855, 30248, 32509, 34220, 37810, 44840, 46168, 46964, 57710, 58705, 65018, 68440, 75620, 93928, 109649, 115420, 117410, 130036, 151240, 162545, 219298, 223079, 230840, 234820, 260072, 325090, 340489, 438596, 446158, 469640, 548245, 650180, 680978, 877192, 892316, 1096490, 1115395, 1300360, 1361956, 1702445, 1784632, 2192980, 2230790, 2723912, 3404890, 4385960, 4461580, 6469291, 6809780, 8923160, 12938582, 13619560, 25877164, 32346455, 51754328, 64692910, 129385820, 258771640]

約数ペア:

[(1, 258771640), (2, 129385820), (4, 64692910), (5, 51754328), (8, 32346455), (10, 25877164), (19, 13619560), (20, 12938582), (29, 8923160), (38, 6809780), (40, 6469291), (58, 4461580), (59, 4385960), (76, 3404890), (95, 2723912), (116, 2230790), (118, 2192980), (145, 1784632), (152, 1702445), (190, 1361956), (199, 1300360), (232, 1115395), (236, 1096490), (290, 892316), (295, 877192), (380, 680978), (398, 650180), (472, 548245), (551, 469640), (580, 446158), (590, 438596), (760, 340489), (796, 325090), (995, 260072), (1102, 234820), (1121, 230840), (1160, 223079), (1180, 219298), (1592, 162545), (1711, 151240), (1990, 130036), (2204, 117410), (2242, 115420), (2360, 109649), (2755, 93928), (3422, 75620), (3781, 68440), (3980, 65018), (4408, 58705), (4484, 57710), (5510, 46964), (5605, 46168), (5771, 44840), (6844, 37810), (7562, 34220), (7960, 32509), (8555, 30248), (8968, 28855), (11020, 23482), (11210, 23084), (11542, 22420), (11741, 22040), (13688, 18905), (15124, 17110)]