21551439

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{887}}^1$

素因数の和:999

約数の個数: 32

約数和(自身を含む): 35804160

約数和(自身を除く): 14252721

約数列:

[1, 3, 7, 13, 21, 39, 89, 91, 267, 273, 623, 887, 1157, 1869, 2661, 3471, 6209, 8099, 11531, 18627, 24297, 34593, 78943, 80717, 236829, 242151, 552601, 1026259, 1657803, 3078777, 7183813, 21551439]

約数ペア:

[(1, 21551439), (3, 7183813), (7, 3078777), (13, 1657803), (21, 1026259), (39, 552601), (89, 242151), (91, 236829), (267, 80717), (273, 78943), (623, 34593), (887, 24297), (1157, 18627), (1869, 11531), (2661, 8099), (3471, 6209)]