18311956

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 36747648

約数和(自身を除く): 18435692

約数列:

[1, 2, 4, 13, 23, 26, 46, 52, 61, 92, 122, 244, 251, 299, 502, 598, 793, 1004, 1196, 1403, 1586, 2806, 3172, 3263, 5612, 5773, 6526, 11546, 13052, 15311, 18239, 23092, 30622, 36478, 61244, 72956, 75049, 150098, 199043, 300196, 352153, 398086, 704306, 796172, 1408612, 4577989, 9155978, 18311956]

約数ペア:

[(1, 18311956), (2, 9155978), (4, 4577989), (13, 1408612), (23, 796172), (26, 704306), (46, 398086), (52, 352153), (61, 300196), (92, 199043), (122, 150098), (244, 75049), (251, 72956), (299, 61244), (502, 36478), (598, 30622), (793, 23092), (1004, 18239), (1196, 15311), (1403, 13052), (1586, 11546), (2806, 6526), (3172, 5773), (3263, 5612)]