31127985

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{743}}^1$

素因数の和:787

約数の個数: 72

約数和(自身を含む): 66156480

約数和(自身を除く): 35028495

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 49, 57, 63, 95, 105, 133, 147, 171, 245, 285, 315, 399, 441, 665, 735, 743, 855, 931, 1197, 1995, 2205, 2229, 2793, 3715, 4655, 5201, 5985, 6687, 8379, 11145, 13965, 14117, 15603, 26005, 33435, 36407, 41895, 42351, 46809, 70585, 78015, 98819, 109221, 127053, 182035, 211755, 234045, 296457, 327663, 494095, 546105, 635265, 691733, 889371, 1482285, 1638315, 2075199, 3458665, 4446855, 6225597, 10375995, 31127985]

約数ペア:

[(1, 31127985), (3, 10375995), (5, 6225597), (7, 4446855), (9, 3458665), (15, 2075199), (19, 1638315), (21, 1482285), (35, 889371), (45, 691733), (49, 635265), (57, 546105), (63, 494095), (95, 327663), (105, 296457), (133, 234045), (147, 211755), (171, 182035), (245, 127053), (285, 109221), (315, 98819), (399, 78015), (441, 70585), (665, 46809), (735, 42351), (743, 41895), (855, 36407), (931, 33435), (1197, 26005), (1995, 15603), (2205, 14117), (2229, 13965), (2793, 11145), (3715, 8379), (4655, 6687), (5201, 5985)]