19993040

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{3011}}^1$

素因数の和:3107

約数の個数: 40

約数和(自身を含む): 47059488

約数和(自身を除く): 27066448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 332, 415, 664, 830, 1328, 1660, 3011, 3320, 6022, 6640, 12044, 15055, 24088, 30110, 48176, 60220, 120440, 240880, 249913, 499826, 999652, 1249565, 1999304, 2499130, 3998608, 4998260, 9996520, 19993040]

約数ペア:

[(1, 19993040), (2, 9996520), (4, 4998260), (5, 3998608), (8, 2499130), (10, 1999304), (16, 1249565), (20, 999652), (40, 499826), (80, 249913), (83, 240880), (166, 120440), (332, 60220), (415, 48176), (664, 30110), (830, 24088), (1328, 15055), (1660, 12044), (3011, 6640), (3320, 6022)]