19715968

素因数分解:

$2^7\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1$

素因数の和:255

約数の個数: 64

約数和(自身を含む): 42325920

約数和(自身を除く): 22609952

約数列:

[1, 2, 4, 8, 16, 23, 32, 37, 46, 64, 74, 92, 128, 148, 181, 184, 296, 362, 368, 592, 724, 736, 851, 1184, 1448, 1472, 1702, 2368, 2896, 2944, 3404, 4163, 4736, 5792, 6697, 6808, 8326, 11584, 13394, 13616, 16652, 23168, 26788, 27232, 33304, 53576, 54464, 66608, 107152, 108928, 133216, 154031, 214304, 266432, 308062, 428608, 532864, 616124, 857216, 1232248, 2464496, 4928992, 9857984, 19715968]

約数ペア:

[(1, 19715968), (2, 9857984), (4, 4928992), (8, 2464496), (16, 1232248), (23, 857216), (32, 616124), (37, 532864), (46, 428608), (64, 308062), (74, 266432), (92, 214304), (128, 154031), (148, 133216), (181, 108928), (184, 107152), (296, 66608), (362, 54464), (368, 53576), (592, 33304), (724, 27232), (736, 26788), (851, 23168), (1184, 16652), (1448, 13616), (1472, 13394), (1702, 11584), (2368, 8326), (2896, 6808), (2944, 6697), (3404, 5792), (4163, 4736)]