20121738

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{269}}^1$

素因数の和:431

約数の個数: 64

約数和(自身を含む): 50077440

約数和(自身を除く): 29955702

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 137, 182, 269, 273, 274, 411, 538, 546, 807, 822, 959, 1614, 1781, 1883, 1918, 2877, 3497, 3562, 3766, 5343, 5649, 5754, 6994, 10491, 10686, 11298, 12467, 20982, 24479, 24934, 36853, 37401, 48958, 73437, 73706, 74802, 110559, 146874, 221118, 257971, 479089, 515942, 773913, 958178, 1437267, 1547826, 2874534, 3353623, 6707246, 10060869, 20121738]

約数ペア:

[(1, 20121738), (2, 10060869), (3, 6707246), (6, 3353623), (7, 2874534), (13, 1547826), (14, 1437267), (21, 958178), (26, 773913), (39, 515942), (42, 479089), (78, 257971), (91, 221118), (137, 146874), (182, 110559), (269, 74802), (273, 73706), (274, 73437), (411, 48958), (538, 37401), (546, 36853), (807, 24934), (822, 24479), (959, 20982), (1614, 12467), (1781, 11298), (1883, 10686), (1918, 10491), (2877, 6994), (3497, 5754), (3562, 5649), (3766, 5343)]