258047720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{31}}^2\times {\mathrm{137}}^1$

素因数の和:224

約数の個数: 144

約数和(自身を含む): 702984420

約数和(自身を除く): 444936700

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 49, 56, 62, 70, 98, 124, 137, 140, 155, 196, 217, 245, 248, 274, 280, 310, 392, 434, 490, 548, 620, 685, 868, 959, 961, 980, 1085, 1096, 1240, 1370, 1519, 1736, 1918, 1922, 1960, 2170, 2740, 3038, 3836, 3844, 4247, 4340, 4795, 4805, 5480, 6076, 6713, 6727, 7595, 7672, 7688, 8494, 8680, 9590, 9610, 12152, 13426, 13454, 15190, 16988, 19180, 19220, 21235, 26852, 26908, 29729, 30380, 33565, 33635, 33976, 38360, 38440, 42470, 47089, 53704, 53816, 59458, 60760, 67130, 67270, 84940, 94178, 118916, 131657, 134260, 134540, 148645, 169880, 188356, 208103, 235445, 237832, 263314, 268520, 269080, 297290, 376712, 416206, 470890, 526628, 594580, 658285, 832412, 921599, 941780, 1040515, 1053256, 1189160, 1316570, 1664824, 1843198, 1883560, 2081030, 2633140, 3686396, 4162060, 4607995, 5266280, 6451193, 7372792, 8324120, 9215990, 12902386, 18431980, 25804772, 32255965, 36863960, 51609544, 64511930, 129023860, 258047720]

約数ペア:

[(1, 258047720), (2, 129023860), (4, 64511930), (5, 51609544), (7, 36863960), (8, 32255965), (10, 25804772), (14, 18431980), (20, 12902386), (28, 9215990), (31, 8324120), (35, 7372792), (40, 6451193), (49, 5266280), (56, 4607995), (62, 4162060), (70, 3686396), (98, 2633140), (124, 2081030), (137, 1883560), (140, 1843198), (155, 1664824), (196, 1316570), (217, 1189160), (245, 1053256), (248, 1040515), (274, 941780), (280, 921599), (310, 832412), (392, 658285), (434, 594580), (490, 526628), (548, 470890), (620, 416206), (685, 376712), (868, 297290), (959, 269080), (961, 268520), (980, 263314), (1085, 237832), (1096, 235445), (1240, 208103), (1370, 188356), (1519, 169880), (1736, 148645), (1918, 134540), (1922, 134260), (1960, 131657), (2170, 118916), (2740, 94178), (3038, 84940), (3836, 67270), (3844, 67130), (4247, 60760), (4340, 59458), (4795, 53816), (4805, 53704), (5480, 47089), (6076, 42470), (6713, 38440), (6727, 38360), (7595, 33976), (7672, 33635), (7688, 33565), (8494, 30380), (8680, 29729), (9590, 26908), (9610, 26852), (12152, 21235), (13426, 19220), (13454, 19180), (15190, 16988)]