81118920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{9521}}^1$

素因数の和:9606

約数の個数: 64

約数和(自身を含む): 246810240

約数和(自身を除く): 165691320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 284, 355, 426, 568, 710, 852, 1065, 1420, 1704, 2130, 2840, 4260, 8520, 9521, 19042, 28563, 38084, 47605, 57126, 76168, 95210, 114252, 142815, 190420, 228504, 285630, 380840, 571260, 675991, 1142520, 1351982, 2027973, 2703964, 3379955, 4055946, 5407928, 6759910, 8111892, 10139865, 13519820, 16223784, 20279730, 27039640, 40559460, 81118920]

約数ペア:

[(1, 81118920), (2, 40559460), (3, 27039640), (4, 20279730), (5, 16223784), (6, 13519820), (8, 10139865), (10, 8111892), (12, 6759910), (15, 5407928), (20, 4055946), (24, 3379955), (30, 2703964), (40, 2027973), (60, 1351982), (71, 1142520), (120, 675991), (142, 571260), (213, 380840), (284, 285630), (355, 228504), (426, 190420), (568, 142815), (710, 114252), (852, 95210), (1065, 76168), (1420, 57126), (1704, 47605), (2130, 38084), (2840, 28563), (4260, 19042), (8520, 9521)]