81263760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:357

約数の個数: 160

約数和(自身を含む): 269982720

約数和(自身を除く): 188718960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 71, 76, 80, 95, 114, 120, 142, 152, 190, 213, 228, 240, 251, 284, 285, 304, 355, 380, 426, 456, 502, 568, 570, 710, 753, 760, 852, 912, 1004, 1065, 1136, 1140, 1255, 1349, 1420, 1506, 1520, 1704, 2008, 2130, 2280, 2510, 2698, 2840, 3012, 3408, 3765, 4016, 4047, 4260, 4560, 4769, 5020, 5396, 5680, 6024, 6745, 7530, 8094, 8520, 9538, 10040, 10792, 12048, 13490, 14307, 15060, 16188, 17040, 17821, 19076, 20080, 20235, 21584, 23845, 26980, 28614, 30120, 32376, 35642, 38152, 40470, 47690, 53463, 53960, 57228, 60240, 64752, 71284, 71535, 76304, 80940, 89105, 95380, 106926, 107920, 114456, 142568, 143070, 161880, 178210, 190760, 213852, 228912, 267315, 285136, 286140, 323760, 338599, 356420, 381520, 427704, 534630, 572280, 677198, 712840, 855408, 1015797, 1069260, 1144560, 1354396, 1425680, 1692995, 2031594, 2138520, 2708792, 3385990, 4063188, 4277040, 5078985, 5417584, 6771980, 8126376, 10157970, 13543960, 16252752, 20315940, 27087920, 40631880, 81263760]

約数ペア:

[(1, 81263760), (2, 40631880), (3, 27087920), (4, 20315940), (5, 16252752), (6, 13543960), (8, 10157970), (10, 8126376), (12, 6771980), (15, 5417584), (16, 5078985), (19, 4277040), (20, 4063188), (24, 3385990), (30, 2708792), (38, 2138520), (40, 2031594), (48, 1692995), (57, 1425680), (60, 1354396), (71, 1144560), (76, 1069260), (80, 1015797), (95, 855408), (114, 712840), (120, 677198), (142, 572280), (152, 534630), (190, 427704), (213, 381520), (228, 356420), (240, 338599), (251, 323760), (284, 286140), (285, 285136), (304, 267315), (355, 228912), (380, 213852), (426, 190760), (456, 178210), (502, 161880), (568, 143070), (570, 142568), (710, 114456), (753, 107920), (760, 106926), (852, 95380), (912, 89105), (1004, 80940), (1065, 76304), (1136, 71535), (1140, 71284), (1255, 64752), (1349, 60240), (1420, 57228), (1506, 53960), (1520, 53463), (1704, 47690), (2008, 40470), (2130, 38152), (2280, 35642), (2510, 32376), (2698, 30120), (2840, 28614), (3012, 26980), (3408, 23845), (3765, 21584), (4016, 20235), (4047, 20080), (4260, 19076), (4560, 17821), (4769, 17040), (5020, 16188), (5396, 15060), (5680, 14307), (6024, 13490), (6745, 12048), (7530, 10792), (8094, 10040), (8520, 9538)]