31111227

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:165

約数の個数: 72

約数和(自身を含む): 56908800

約数和(自身を除く): 25797573

約数列:

[1, 3, 7, 9, 19, 21, 47, 49, 57, 63, 79, 133, 141, 147, 171, 237, 329, 399, 423, 441, 553, 711, 893, 931, 987, 1197, 1501, 1659, 2303, 2679, 2793, 2961, 3713, 3871, 4503, 4977, 6251, 6909, 8037, 8379, 10507, 11139, 11613, 13509, 18753, 20727, 25991, 31521, 33417, 34839, 43757, 56259, 70547, 73549, 77973, 94563, 131271, 181937, 211641, 220647, 233919, 393813, 493829, 545811, 634923, 661941, 1481487, 1637433, 3456803, 4444461, 10370409, 31111227]

約数ペア:

[(1, 31111227), (3, 10370409), (7, 4444461), (9, 3456803), (19, 1637433), (21, 1481487), (47, 661941), (49, 634923), (57, 545811), (63, 493829), (79, 393813), (133, 233919), (141, 220647), (147, 211641), (171, 181937), (237, 131271), (329, 94563), (399, 77973), (423, 73549), (441, 70547), (553, 56259), (711, 43757), (893, 34839), (931, 33417), (987, 31521), (1197, 25991), (1501, 20727), (1659, 18753), (2303, 13509), (2679, 11613), (2793, 11139), (2961, 10507), (3713, 8379), (3871, 8037), (4503, 6909), (4977, 6251)]