28028007

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^2\times {\mathrm{29}}^2$

素因数の和:117

約数の個数: 54

約数和(自身を含む): 50092952

約数和(自身を除く): 22064945

約数列:

[1, 3, 7, 9, 21, 23, 29, 63, 69, 87, 161, 203, 207, 261, 483, 529, 609, 667, 841, 1449, 1587, 1827, 2001, 2523, 3703, 4669, 4761, 5887, 6003, 7569, 11109, 14007, 15341, 17661, 19343, 33327, 42021, 46023, 52983, 58029, 107387, 135401, 138069, 174087, 322161, 406203, 444889, 966483, 1218609, 1334667, 3114223, 4004001, 9342669, 28028007]

約数ペア:

[(1, 28028007), (3, 9342669), (7, 4004001), (9, 3114223), (21, 1334667), (23, 1218609), (29, 966483), (63, 444889), (69, 406203), (87, 322161), (161, 174087), (203, 138069), (207, 135401), (261, 107387), (483, 58029), (529, 52983), (609, 46023), (667, 42021), (841, 33327), (1449, 19343), (1587, 17661), (1827, 15341), (2001, 14007), (2523, 11109), (3703, 7569), (4669, 6003), (4761, 5887)]