15981399

素因数分解:

$3^2\times 7^3\times {\mathrm{31}}^1\times {\mathrm{167}}^1$

素因数の和:225

約数の個数: 48

約数和(自身を含む): 27955200

約数和(自身を除く): 11973801

約数列:

[1, 3, 7, 9, 21, 31, 49, 63, 93, 147, 167, 217, 279, 343, 441, 501, 651, 1029, 1169, 1503, 1519, 1953, 3087, 3507, 4557, 5177, 8183, 10521, 10633, 13671, 15531, 24549, 31899, 36239, 46593, 57281, 73647, 95697, 108717, 171843, 253673, 326151, 515529, 761019, 1775711, 2283057, 5327133, 15981399]

約数ペア:

[(1, 15981399), (3, 5327133), (7, 2283057), (9, 1775711), (21, 761019), (31, 515529), (49, 326151), (63, 253673), (93, 171843), (147, 108717), (167, 95697), (217, 73647), (279, 57281), (343, 46593), (441, 36239), (501, 31899), (651, 24549), (1029, 15531), (1169, 13671), (1503, 10633), (1519, 10521), (1953, 8183), (3087, 5177), (3507, 4557)]