28004823

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{251}}^1$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 53778816

約数和(自身を除く): 25773993

約数列:

[1, 3, 7, 9, 11, 21, 23, 33, 49, 63, 69, 77, 99, 147, 161, 207, 231, 251, 253, 441, 483, 539, 693, 753, 759, 1127, 1449, 1617, 1757, 1771, 2259, 2277, 2761, 3381, 4851, 5271, 5313, 5773, 8283, 10143, 12299, 12397, 15813, 15939, 17319, 19327, 24849, 36897, 37191, 40411, 51957, 57981, 63503, 110691, 111573, 121233, 135289, 173943, 190509, 282877, 363699, 405867, 444521, 571527, 848631, 1217601, 1333563, 2545893, 3111647, 4000689, 9334941, 28004823]

約数ペア:

[(1, 28004823), (3, 9334941), (7, 4000689), (9, 3111647), (11, 2545893), (21, 1333563), (23, 1217601), (33, 848631), (49, 571527), (63, 444521), (69, 405867), (77, 363699), (99, 282877), (147, 190509), (161, 173943), (207, 135289), (231, 121233), (251, 111573), (253, 110691), (441, 63503), (483, 57981), (539, 51957), (693, 40411), (753, 37191), (759, 36897), (1127, 24849), (1449, 19327), (1617, 17319), (1757, 15939), (1771, 15813), (2259, 12397), (2277, 12299), (2761, 10143), (3381, 8283), (4851, 5773), (5271, 5313)]