19791616

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{313}}^1$

素因数の和:361

約数の個数: 72

約数和(自身を含む): 44927120

約数和(自身を除く): 25135504

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 64, 76, 104, 128, 152, 208, 247, 256, 304, 313, 416, 494, 608, 626, 832, 988, 1216, 1252, 1664, 1976, 2432, 2504, 3328, 3952, 4069, 4864, 5008, 5947, 7904, 8138, 10016, 11894, 15808, 16276, 20032, 23788, 31616, 32552, 40064, 47576, 63232, 65104, 77311, 80128, 95152, 130208, 154622, 190304, 260416, 309244, 380608, 520832, 618488, 761216, 1041664, 1236976, 1522432, 2473952, 4947904, 9895808, 19791616]

約数ペア:

[(1, 19791616), (2, 9895808), (4, 4947904), (8, 2473952), (13, 1522432), (16, 1236976), (19, 1041664), (26, 761216), (32, 618488), (38, 520832), (52, 380608), (64, 309244), (76, 260416), (104, 190304), (128, 154622), (152, 130208), (208, 95152), (247, 80128), (256, 77311), (304, 65104), (313, 63232), (416, 47576), (494, 40064), (608, 32552), (626, 31616), (832, 23788), (988, 20032), (1216, 16276), (1252, 15808), (1664, 11894), (1976, 10016), (2432, 8138), (2504, 7904), (3328, 5947), (3952, 5008), (4069, 4864)]