19547720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6883}}^1$

素因数の和:6965

約数の個数: 32

約数和(自身を含む): 44608320

約数和(自身を除く): 25060600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 6883, 13766, 27532, 34415, 55064, 68830, 137660, 275320, 488693, 977386, 1954772, 2443465, 3909544, 4886930, 9773860, 19547720]

約数ペア:

[(1, 19547720), (2, 9773860), (4, 4886930), (5, 3909544), (8, 2443465), (10, 1954772), (20, 977386), (40, 488693), (71, 275320), (142, 137660), (284, 68830), (355, 55064), (568, 34415), (710, 27532), (1420, 13766), (2840, 6883)]