19515904

素因数分解:

$2^9\times {\mathrm{47}}^1\times {\mathrm{811}}^1$

素因数の和:876

約数の個数: 40

約数和(自身を含む): 39872448

約数和(自身を除く): 20356544

約数列:

[1, 2, 4, 8, 16, 32, 47, 64, 94, 128, 188, 256, 376, 512, 752, 811, 1504, 1622, 3008, 3244, 6016, 6488, 12032, 12976, 24064, 25952, 38117, 51904, 76234, 103808, 152468, 207616, 304936, 415232, 609872, 1219744, 2439488, 4878976, 9757952, 19515904]

約数ペア:

[(1, 19515904), (2, 9757952), (4, 4878976), (8, 2439488), (16, 1219744), (32, 609872), (47, 415232), (64, 304936), (94, 207616), (128, 152468), (188, 103808), (256, 76234), (376, 51904), (512, 38117), (752, 25952), (811, 24064), (1504, 12976), (1622, 12032), (3008, 6488), (3244, 6016)]