28167993

素因数分解:

$3^4\times 7^2\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:224

約数の個数: 60

約数和(自身を含む): 50320512

約数和(自身を除く): 22152519

約数列:

[1, 3, 7, 9, 21, 27, 47, 49, 63, 81, 141, 147, 151, 189, 329, 423, 441, 453, 567, 987, 1057, 1269, 1323, 1359, 2303, 2961, 3171, 3807, 3969, 4077, 6909, 7097, 7399, 8883, 9513, 12231, 20727, 21291, 22197, 26649, 28539, 49679, 62181, 63873, 66591, 85617, 149037, 186543, 191619, 199773, 347753, 447111, 574857, 599319, 1043259, 1341333, 3129777, 4023999, 9389331, 28167993]

約数ペア:

[(1, 28167993), (3, 9389331), (7, 4023999), (9, 3129777), (21, 1341333), (27, 1043259), (47, 599319), (49, 574857), (63, 447111), (81, 347753), (141, 199773), (147, 191619), (151, 186543), (189, 149037), (329, 85617), (423, 66591), (441, 63873), (453, 62181), (567, 49679), (987, 28539), (1057, 26649), (1269, 22197), (1323, 21291), (1359, 20727), (2303, 12231), (2961, 9513), (3171, 8883), (3807, 7399), (3969, 7097), (4077, 6909)]