20185815

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1697}}^1$

素因数の和:1779

約数の個数: 32

約数和(自身を含む): 35372736

約数和(自身を除く): 15186921

約数列:

[1, 3, 5, 13, 15, 39, 61, 65, 183, 195, 305, 793, 915, 1697, 2379, 3965, 5091, 8485, 11895, 22061, 25455, 66183, 103517, 110305, 310551, 330915, 517585, 1345721, 1552755, 4037163, 6728605, 20185815]

約数ペア:

[(1, 20185815), (3, 6728605), (5, 4037163), (13, 1552755), (15, 1345721), (39, 517585), (61, 330915), (65, 310551), (183, 110305), (195, 103517), (305, 66183), (793, 25455), (915, 22061), (1697, 11895), (2379, 8485), (3965, 5091)]