128644160

素因数分解:

$2^6\times 5^1\times {\mathrm{89}}^1\times {\mathrm{4517}}^1$

素因数の和:4623

約数の個数: 56

約数和(自身を含む): 309844440

約数和(自身を除く): 181200280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 160, 178, 320, 356, 445, 712, 890, 1424, 1780, 2848, 3560, 4517, 5696, 7120, 9034, 14240, 18068, 22585, 28480, 36136, 45170, 72272, 90340, 144544, 180680, 289088, 361360, 402013, 722720, 804026, 1445440, 1608052, 2010065, 3216104, 4020130, 6432208, 8040260, 12864416, 16080520, 25728832, 32161040, 64322080, 128644160]

約数ペア:

[(1, 128644160), (2, 64322080), (4, 32161040), (5, 25728832), (8, 16080520), (10, 12864416), (16, 8040260), (20, 6432208), (32, 4020130), (40, 3216104), (64, 2010065), (80, 1608052), (89, 1445440), (160, 804026), (178, 722720), (320, 402013), (356, 361360), (445, 289088), (712, 180680), (890, 144544), (1424, 90340), (1780, 72272), (2848, 45170), (3560, 36136), (4517, 28480), (5696, 22585), (7120, 18068), (9034, 14240)]