18701392

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{571}}^1$

素因数の和:691

約数の個数: 40

約数和(自身を含む): 38301120

約数和(自身を除く): 19599728

約数列:

[1, 2, 4, 8, 16, 23, 46, 89, 92, 178, 184, 356, 368, 571, 712, 1142, 1424, 2047, 2284, 4094, 4568, 8188, 9136, 13133, 16376, 26266, 32752, 50819, 52532, 101638, 105064, 203276, 210128, 406552, 813104, 1168837, 2337674, 4675348, 9350696, 18701392]

約数ペア:

[(1, 18701392), (2, 9350696), (4, 4675348), (8, 2337674), (16, 1168837), (23, 813104), (46, 406552), (89, 210128), (92, 203276), (178, 105064), (184, 101638), (356, 52532), (368, 50819), (571, 32752), (712, 26266), (1142, 16376), (1424, 13133), (2047, 9136), (2284, 8188), (4094, 4568)]