78219820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{269}}^1$

素因数の和:383

約数の個数: 96

約数和(自身を含む): 197406720

約数和(自身を除く): 119186900

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 67, 70, 124, 134, 140, 155, 217, 268, 269, 310, 335, 434, 469, 538, 620, 670, 868, 938, 1076, 1085, 1340, 1345, 1876, 1883, 2077, 2170, 2345, 2690, 3766, 4154, 4340, 4690, 5380, 7532, 8308, 8339, 9380, 9415, 10385, 14539, 16678, 18023, 18830, 20770, 29078, 33356, 36046, 37660, 41540, 41695, 58156, 58373, 72092, 72695, 83390, 90115, 116746, 126161, 145390, 166780, 180230, 233492, 252322, 290780, 291865, 360460, 504644, 558713, 583730, 630805, 1117426, 1167460, 1261610, 2234852, 2523220, 2793565, 3910991, 5587130, 7821982, 11174260, 15643964, 19554955, 39109910, 78219820]

約数ペア:

[(1, 78219820), (2, 39109910), (4, 19554955), (5, 15643964), (7, 11174260), (10, 7821982), (14, 5587130), (20, 3910991), (28, 2793565), (31, 2523220), (35, 2234852), (62, 1261610), (67, 1167460), (70, 1117426), (124, 630805), (134, 583730), (140, 558713), (155, 504644), (217, 360460), (268, 291865), (269, 290780), (310, 252322), (335, 233492), (434, 180230), (469, 166780), (538, 145390), (620, 126161), (670, 116746), (868, 90115), (938, 83390), (1076, 72695), (1085, 72092), (1340, 58373), (1345, 58156), (1876, 41695), (1883, 41540), (2077, 37660), (2170, 36046), (2345, 33356), (2690, 29078), (3766, 20770), (4154, 18830), (4340, 18023), (4690, 16678), (5380, 14539), (7532, 10385), (8308, 9415), (8339, 9380)]