21901120

素因数分解:

$2^6\times 5^1\times {\mathrm{89}}^1\times {\mathrm{769}}^1$

素因数の和:875

約数の個数: 56

約数和(自身を含む): 52806600

約数和(自身を除く): 30905480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 160, 178, 320, 356, 445, 712, 769, 890, 1424, 1538, 1780, 2848, 3076, 3560, 3845, 5696, 6152, 7120, 7690, 12304, 14240, 15380, 24608, 28480, 30760, 49216, 61520, 68441, 123040, 136882, 246080, 273764, 342205, 547528, 684410, 1095056, 1368820, 2190112, 2737640, 4380224, 5475280, 10950560, 21901120]

約数ペア:

[(1, 21901120), (2, 10950560), (4, 5475280), (5, 4380224), (8, 2737640), (10, 2190112), (16, 1368820), (20, 1095056), (32, 684410), (40, 547528), (64, 342205), (80, 273764), (89, 246080), (160, 136882), (178, 123040), (320, 68441), (356, 61520), (445, 49216), (712, 30760), (769, 28480), (890, 24608), (1424, 15380), (1538, 14240), (1780, 12304), (2848, 7690), (3076, 7120), (3560, 6152), (3845, 5696)]