21177639

素因数分解:

$3^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1259}}^1$

素因数の和:1364

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 15110361

約数列:

[1, 3, 7, 9, 21, 27, 63, 89, 189, 267, 623, 801, 1259, 1869, 2403, 3777, 5607, 8813, 11331, 16821, 26439, 33993, 79317, 112051, 237951, 336153, 784357, 1008459, 2353071, 3025377, 7059213, 21177639]

約数ペア:

[(1, 21177639), (3, 7059213), (7, 3025377), (9, 2353071), (21, 1008459), (27, 784357), (63, 336153), (89, 237951), (189, 112051), (267, 79317), (623, 33993), (801, 26439), (1259, 16821), (1869, 11331), (2403, 8813), (3777, 5607)]