20751885

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:195

約数の個数: 96

約数和(自身を含む): 46096128

約数和(自身を除く): 25344243

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 53, 55, 63, 77, 99, 105, 113, 159, 165, 231, 265, 315, 339, 371, 385, 477, 495, 565, 583, 693, 791, 795, 1017, 1113, 1155, 1243, 1695, 1749, 1855, 2373, 2385, 2915, 3339, 3465, 3729, 3955, 4081, 5085, 5247, 5565, 5989, 6215, 7119, 8701, 8745, 11187, 11865, 12243, 16695, 17967, 18645, 20405, 26103, 26235, 29945, 35595, 36729, 41923, 43505, 53901, 55935, 61215, 65879, 78309, 89835, 125769, 130515, 183645, 197637, 209615, 269505, 329395, 377307, 391545, 461153, 592911, 628845, 988185, 1383459, 1886535, 2305765, 2964555, 4150377, 6917295, 20751885]

約数ペア:

[(1, 20751885), (3, 6917295), (5, 4150377), (7, 2964555), (9, 2305765), (11, 1886535), (15, 1383459), (21, 988185), (33, 628845), (35, 592911), (45, 461153), (53, 391545), (55, 377307), (63, 329395), (77, 269505), (99, 209615), (105, 197637), (113, 183645), (159, 130515), (165, 125769), (231, 89835), (265, 78309), (315, 65879), (339, 61215), (371, 55935), (385, 53901), (477, 43505), (495, 41923), (565, 36729), (583, 35595), (693, 29945), (791, 26235), (795, 26103), (1017, 20405), (1113, 18645), (1155, 17967), (1243, 16695), (1695, 12243), (1749, 11865), (1855, 11187), (2373, 8745), (2385, 8701), (2915, 7119), (3339, 6215), (3465, 5989), (3729, 5565), (3955, 5247), (4081, 5085)]