81587760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19997}}^1$

素因数の和:20030

約数の個数: 80

約数和(自身を含む): 267813216

約数和(自身を除く): 186225456

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 19997, 39994, 59991, 79988, 99985, 119982, 159976, 199970, 239964, 299955, 319952, 339949, 399940, 479928, 599910, 679898, 799880, 959856, 1019847, 1199820, 1359796, 1599760, 1699745, 2039694, 2399640, 2719592, 3399490, 4079388, 4799280, 5099235, 5439184, 6798980, 8158776, 10198470, 13597960, 16317552, 20396940, 27195920, 40793880, 81587760]

約数ペア:

[(1, 81587760), (2, 40793880), (3, 27195920), (4, 20396940), (5, 16317552), (6, 13597960), (8, 10198470), (10, 8158776), (12, 6798980), (15, 5439184), (16, 5099235), (17, 4799280), (20, 4079388), (24, 3399490), (30, 2719592), (34, 2399640), (40, 2039694), (48, 1699745), (51, 1599760), (60, 1359796), (68, 1199820), (80, 1019847), (85, 959856), (102, 799880), (120, 679898), (136, 599910), (170, 479928), (204, 399940), (240, 339949), (255, 319952), (272, 299955), (340, 239964), (408, 199970), (510, 159976), (680, 119982), (816, 99985), (1020, 79988), (1360, 59991), (2040, 39994), (4080, 19997)]