21118160

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{877}}^1$

素因数の和:940

約数の個数: 80

約数和(自身を含む): 57484416

約数和(自身を除く): 36366256

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 43, 56, 70, 80, 86, 112, 140, 172, 215, 280, 301, 344, 430, 560, 602, 688, 860, 877, 1204, 1505, 1720, 1754, 2408, 3010, 3440, 3508, 4385, 4816, 6020, 6139, 7016, 8770, 12040, 12278, 14032, 17540, 24080, 24556, 30695, 35080, 37711, 49112, 61390, 70160, 75422, 98224, 122780, 150844, 188555, 245560, 263977, 301688, 377110, 491120, 527954, 603376, 754220, 1055908, 1319885, 1508440, 2111816, 2639770, 3016880, 4223632, 5279540, 10559080, 21118160]

約数ペア:

[(1, 21118160), (2, 10559080), (4, 5279540), (5, 4223632), (7, 3016880), (8, 2639770), (10, 2111816), (14, 1508440), (16, 1319885), (20, 1055908), (28, 754220), (35, 603376), (40, 527954), (43, 491120), (56, 377110), (70, 301688), (80, 263977), (86, 245560), (112, 188555), (140, 150844), (172, 122780), (215, 98224), (280, 75422), (301, 70160), (344, 61390), (430, 49112), (560, 37711), (602, 35080), (688, 30695), (860, 24556), (877, 24080), (1204, 17540), (1505, 14032), (1720, 12278), (1754, 12040), (2408, 8770), (3010, 7016), (3440, 6139), (3508, 6020), (4385, 4816)]