28301481

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1$

素因数の和:93

約数の個数: 72

約数和(自身を含む): 50063104

約数和(自身を除く): 21761623

約数列:

[1, 3, 9, 13, 17, 27, 31, 39, 51, 81, 93, 117, 153, 221, 243, 279, 289, 351, 403, 459, 527, 663, 837, 867, 1053, 1209, 1377, 1581, 1989, 2511, 2601, 3159, 3627, 3757, 4131, 4743, 5967, 6851, 7533, 7803, 8959, 10881, 11271, 14229, 17901, 20553, 23409, 26877, 32643, 33813, 42687, 53703, 61659, 70227, 80631, 97929, 101439, 116467, 128061, 184977, 241893, 304317, 349401, 554931, 725679, 912951, 1048203, 1664793, 2177037, 3144609, 9433827, 28301481]

約数ペア:

[(1, 28301481), (3, 9433827), (9, 3144609), (13, 2177037), (17, 1664793), (27, 1048203), (31, 912951), (39, 725679), (51, 554931), (81, 349401), (93, 304317), (117, 241893), (153, 184977), (221, 128061), (243, 116467), (279, 101439), (289, 97929), (351, 80631), (403, 70227), (459, 61659), (527, 53703), (663, 42687), (837, 33813), (867, 32643), (1053, 26877), (1209, 23409), (1377, 20553), (1581, 17901), (1989, 14229), (2511, 11271), (2601, 10881), (3159, 8959), (3627, 7803), (3757, 7533), (4131, 6851), (4743, 5967)]