202121240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{373}}^1$

素因数の和:457

約数の個数: 128

約数和(自身を含む): 517017600

約数和(自身を除く): 314896360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 31, 38, 40, 46, 62, 76, 92, 95, 115, 124, 152, 155, 184, 190, 230, 248, 310, 373, 380, 437, 460, 589, 620, 713, 746, 760, 874, 920, 1178, 1240, 1426, 1492, 1748, 1865, 2185, 2356, 2852, 2945, 2984, 3496, 3565, 3730, 4370, 4712, 5704, 5890, 7087, 7130, 7460, 8579, 8740, 11563, 11780, 13547, 14174, 14260, 14920, 17158, 17480, 23126, 23560, 27094, 28348, 28520, 34316, 35435, 42895, 46252, 54188, 56696, 57815, 67735, 68632, 70870, 85790, 92504, 108376, 115630, 135470, 141740, 163001, 171580, 219697, 231260, 265949, 270940, 283480, 326002, 343160, 439394, 462520, 531898, 541880, 652004, 815005, 878788, 1063796, 1098485, 1304008, 1329745, 1630010, 1757576, 2127592, 2196970, 2659490, 3260020, 4393940, 5053031, 5318980, 6520040, 8787880, 10106062, 10637960, 20212124, 25265155, 40424248, 50530310, 101060620, 202121240]

約数ペア:

[(1, 202121240), (2, 101060620), (4, 50530310), (5, 40424248), (8, 25265155), (10, 20212124), (19, 10637960), (20, 10106062), (23, 8787880), (31, 6520040), (38, 5318980), (40, 5053031), (46, 4393940), (62, 3260020), (76, 2659490), (92, 2196970), (95, 2127592), (115, 1757576), (124, 1630010), (152, 1329745), (155, 1304008), (184, 1098485), (190, 1063796), (230, 878788), (248, 815005), (310, 652004), (373, 541880), (380, 531898), (437, 462520), (460, 439394), (589, 343160), (620, 326002), (713, 283480), (746, 270940), (760, 265949), (874, 231260), (920, 219697), (1178, 171580), (1240, 163001), (1426, 141740), (1492, 135470), (1748, 115630), (1865, 108376), (2185, 92504), (2356, 85790), (2852, 70870), (2945, 68632), (2984, 67735), (3496, 57815), (3565, 56696), (3730, 54188), (4370, 46252), (4712, 42895), (5704, 35435), (5890, 34316), (7087, 28520), (7130, 28348), (7460, 27094), (8579, 23560), (8740, 23126), (11563, 17480), (11780, 17158), (13547, 14920), (14174, 14260)]