18648819

素因数分解:

$3^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1249}}^1$

素因数の和:1344

約数の個数: 32

約数和(自身を含む): 32000000

約数和(自身を除く): 13351181

約数列:

[1, 3, 7, 9, 21, 27, 63, 79, 189, 237, 553, 711, 1249, 1659, 2133, 3747, 4977, 8743, 11241, 14931, 26229, 33723, 78687, 98671, 236061, 296013, 690697, 888039, 2072091, 2664117, 6216273, 18648819]

約数ペア:

[(1, 18648819), (3, 6216273), (7, 2664117), (9, 2072091), (21, 888039), (27, 690697), (63, 296013), (79, 236061), (189, 98671), (237, 78687), (553, 33723), (711, 26229), (1249, 14931), (1659, 11241), (2133, 8743), (3747, 4977)]