18633040

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2617}}^1$

素因数の和:2719

約数の個数: 40

約数和(自身を含む): 43825320

約数和(自身を除く): 25192280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 2617, 3560, 5234, 7120, 10468, 13085, 20936, 26170, 41872, 52340, 104680, 209360, 232913, 465826, 931652, 1164565, 1863304, 2329130, 3726608, 4658260, 9316520, 18633040]

約数ペア:

[(1, 18633040), (2, 9316520), (4, 4658260), (5, 3726608), (8, 2329130), (10, 1863304), (16, 1164565), (20, 931652), (40, 465826), (80, 232913), (89, 209360), (178, 104680), (356, 52340), (445, 41872), (712, 26170), (890, 20936), (1424, 13085), (1780, 10468), (2617, 7120), (3560, 5234)]