19907888

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1$

素因数の和:163

約数の個数: 120

約数和(自身を含む): 52642464

約数和(自身を除く): 32734576

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 44, 52, 56, 77, 88, 91, 104, 112, 113, 121, 143, 154, 176, 182, 208, 226, 242, 286, 308, 364, 452, 484, 572, 616, 728, 791, 847, 904, 968, 1001, 1144, 1232, 1243, 1456, 1469, 1573, 1582, 1694, 1808, 1936, 2002, 2288, 2486, 2938, 3146, 3164, 3388, 4004, 4972, 5876, 6292, 6328, 6776, 8008, 8701, 9944, 10283, 11011, 11752, 12584, 12656, 13552, 13673, 16016, 16159, 17402, 19888, 20566, 22022, 23504, 25168, 27346, 32318, 34804, 41132, 44044, 54692, 64636, 69608, 82264, 88088, 95711, 109384, 113113, 129272, 139216, 164528, 176176, 177749, 191422, 218768, 226226, 258544, 355498, 382844, 452452, 710996, 765688, 904904, 1244243, 1421992, 1531376, 1809808, 2488486, 2843984, 4976972, 9953944, 19907888]

約数ペア:

[(1, 19907888), (2, 9953944), (4, 4976972), (7, 2843984), (8, 2488486), (11, 1809808), (13, 1531376), (14, 1421992), (16, 1244243), (22, 904904), (26, 765688), (28, 710996), (44, 452452), (52, 382844), (56, 355498), (77, 258544), (88, 226226), (91, 218768), (104, 191422), (112, 177749), (113, 176176), (121, 164528), (143, 139216), (154, 129272), (176, 113113), (182, 109384), (208, 95711), (226, 88088), (242, 82264), (286, 69608), (308, 64636), (364, 54692), (452, 44044), (484, 41132), (572, 34804), (616, 32318), (728, 27346), (791, 25168), (847, 23504), (904, 22022), (968, 20566), (1001, 19888), (1144, 17402), (1232, 16159), (1243, 16016), (1456, 13673), (1469, 13552), (1573, 12656), (1582, 12584), (1694, 11752), (1808, 11011), (1936, 10283), (2002, 9944), (2288, 8701), (2486, 8008), (2938, 6776), (3146, 6328), (3164, 6292), (3388, 5876), (4004, 4972)]