19659520

素因数分解:

$2^8\times 5^1\times {\mathrm{15359}}^1$

素因数の和:15380

約数の個数: 36

約数和(自身を含む): 47093760

約数和(自身を除く): 27434240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 15359, 30718, 61436, 76795, 122872, 153590, 245744, 307180, 491488, 614360, 982976, 1228720, 1965952, 2457440, 3931904, 4914880, 9829760, 19659520]

約数ペア:

[(1, 19659520), (2, 9829760), (4, 4914880), (5, 3931904), (8, 2457440), (10, 1965952), (16, 1228720), (20, 982976), (32, 614360), (40, 491488), (64, 307180), (80, 245744), (128, 153590), (160, 122872), (256, 76795), (320, 61436), (640, 30718), (1280, 15359)]