21243195

素因数分解:

$3^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2969}}^1$

素因数の和:3036

約数の個数: 32

約数和(自身を含む): 38491200

約数和(自身を除く): 17248005

約数列:

[1, 3, 5, 9, 15, 27, 45, 53, 135, 159, 265, 477, 795, 1431, 2385, 2969, 7155, 8907, 14845, 26721, 44535, 80163, 133605, 157357, 400815, 472071, 786785, 1416213, 2360355, 4248639, 7081065, 21243195]

約数ペア:

[(1, 21243195), (3, 7081065), (5, 4248639), (9, 2360355), (15, 1416213), (27, 786785), (45, 472071), (53, 400815), (135, 157357), (159, 133605), (265, 80163), (477, 44535), (795, 26721), (1431, 14845), (2385, 8907), (2969, 7155)]