861273

素因数分解:

$3^4\times 7^3\times {\mathrm{31}}^1$

素因数の和:64

約数の個数: 40

約数和(自身を含む): 1548800

約数和(自身を除く): 687527

約数列:

[1, 3, 7, 9, 21, 27, 31, 49, 63, 81, 93, 147, 189, 217, 279, 343, 441, 567, 651, 837, 1029, 1323, 1519, 1953, 2511, 3087, 3969, 4557, 5859, 9261, 10633, 13671, 17577, 27783, 31899, 41013, 95697, 123039, 287091, 861273]

約数ペア:

[(1, 861273), (3, 287091), (7, 123039), (9, 95697), (21, 41013), (27, 31899), (31, 27783), (49, 17577), (63, 13671), (81, 10633), (93, 9261), (147, 5859), (189, 4557), (217, 3969), (279, 3087), (343, 2511), (441, 1953), (567, 1519), (651, 1323), (837, 1029)]