18996842985

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{997}}^1\times {\mathrm{55229}}^1$

素因数の和:56257

約数の個数: 32

約数和(自身を含む): 31748855040

約数和(自身を除く): 12752012055

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 997, 2991, 4985, 14955, 22931, 55229, 68793, 114655, 165687, 276145, 343965, 828435, 1270267, 3810801, 6351335, 19054005, 55063313, 165189939, 275316565, 825949695, 1266456199, 3799368597, 6332280995, 18996842985]

約数ペア:

[(1, 18996842985), (3, 6332280995), (5, 3799368597), (15, 1266456199), (23, 825949695), (69, 275316565), (115, 165189939), (345, 55063313), (997, 19054005), (2991, 6351335), (4985, 3810801), (14955, 1270267), (22931, 828435), (55229, 343965), (68793, 276145), (114655, 165687)]