19710327

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 35610624

約数和(自身を除く): 15900297

約数列:

[1, 3, 7, 13, 17, 21, 31, 39, 51, 91, 93, 119, 137, 217, 221, 273, 357, 403, 411, 527, 651, 663, 959, 1209, 1547, 1581, 1781, 2329, 2821, 2877, 3689, 4247, 4641, 5343, 6851, 6987, 8463, 11067, 12467, 12741, 16303, 20553, 29729, 30277, 37401, 47957, 48909, 55211, 72199, 89187, 90831, 143871, 165633, 211939, 216597, 386477, 505393, 635817, 938587, 1159431, 1516179, 2815761, 6570109, 19710327]

約数ペア:

[(1, 19710327), (3, 6570109), (7, 2815761), (13, 1516179), (17, 1159431), (21, 938587), (31, 635817), (39, 505393), (51, 386477), (91, 216597), (93, 211939), (119, 165633), (137, 143871), (217, 90831), (221, 89187), (273, 72199), (357, 55211), (403, 48909), (411, 47957), (527, 37401), (651, 30277), (663, 29729), (959, 20553), (1209, 16303), (1547, 12741), (1581, 12467), (1781, 11067), (2329, 8463), (2821, 6987), (2877, 6851), (3689, 5343), (4247, 4641)]