19701040

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2767}}^1$

素因数の和:2869

約数の個数: 40

約数和(自身を含む): 46336320

約数和(自身を除く): 26635280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 2767, 3560, 5534, 7120, 11068, 13835, 22136, 27670, 44272, 55340, 110680, 221360, 246263, 492526, 985052, 1231315, 1970104, 2462630, 3940208, 4925260, 9850520, 19701040]

約数ペア:

[(1, 19701040), (2, 9850520), (4, 4925260), (5, 3940208), (8, 2462630), (10, 1970104), (16, 1231315), (20, 985052), (40, 492526), (80, 246263), (89, 221360), (178, 110680), (356, 55340), (445, 44272), (712, 27670), (890, 22136), (1424, 13835), (1780, 11068), (2767, 7120), (3560, 5534)]