20172542481

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1\times {\mathrm{1009}}^1$

素因数の和:1220

約数の個数: 128

約数和(自身を含む): 37646336000

約数和(自身を除く): 17473793519

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 79, 91, 103, 117, 189, 237, 273, 309, 351, 553, 711, 721, 819, 927, 1009, 1027, 1339, 1659, 2133, 2163, 2457, 2781, 3027, 3081, 4017, 4977, 6489, 7063, 7189, 8137, 9081, 9243, 9373, 12051, 13117, 14931, 19467, 21189, 21567, 24411, 27243, 27729, 28119, 36153, 39351, 56959, 63567, 64701, 73233, 79711, 84357, 91819, 103927, 105781, 118053, 170877, 190701, 194103, 219699, 239133, 253071, 275457, 311781, 317343, 354159, 512631, 557977, 717399, 727489, 740467, 826371, 935343, 952029, 1036243, 1351051, 1537893, 1673931, 2152197, 2182467, 2221401, 2479113, 2806029, 2856087, 3108729, 4053153, 5021793, 6547401, 6664203, 7253701, 8210233, 9326187, 9457357, 12159459, 15065379, 19642203, 19992609, 21761103, 24630699, 27978561, 28372071, 36478377, 57471631, 65283309, 73892097, 85116213, 106733029, 172414893, 195849927, 221676291, 255348639, 320199087, 517244679, 747131203, 960597261, 1551734037, 2241393609, 2881791783, 6724180827, 20172542481]

約数ペア:

[(1, 20172542481), (3, 6724180827), (7, 2881791783), (9, 2241393609), (13, 1551734037), (21, 960597261), (27, 747131203), (39, 517244679), (63, 320199087), (79, 255348639), (91, 221676291), (103, 195849927), (117, 172414893), (189, 106733029), (237, 85116213), (273, 73892097), (309, 65283309), (351, 57471631), (553, 36478377), (711, 28372071), (721, 27978561), (819, 24630699), (927, 21761103), (1009, 19992609), (1027, 19642203), (1339, 15065379), (1659, 12159459), (2133, 9457357), (2163, 9326187), (2457, 8210233), (2781, 7253701), (3027, 6664203), (3081, 6547401), (4017, 5021793), (4977, 4053153), (6489, 3108729), (7063, 2856087), (7189, 2806029), (8137, 2479113), (9081, 2221401), (9243, 2182467), (9373, 2152197), (12051, 1673931), (13117, 1537893), (14931, 1351051), (19467, 1036243), (21189, 952029), (21567, 935343), (24411, 826371), (27243, 740467), (27729, 727489), (28119, 717399), (36153, 557977), (39351, 512631), (56959, 354159), (63567, 317343), (64701, 311781), (73233, 275457), (79711, 253071), (84357, 239133), (91819, 219699), (103927, 194103), (105781, 190701), (118053, 170877)]