21217490

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:136

約数の個数: 96

約数和(自身を含む): 48755520

約数和(自身を除く): 27538030

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 43, 49, 53, 70, 86, 95, 98, 106, 133, 190, 215, 245, 265, 266, 301, 371, 430, 490, 530, 602, 665, 742, 817, 931, 1007, 1330, 1505, 1634, 1855, 1862, 2014, 2107, 2279, 2597, 3010, 3710, 4085, 4214, 4558, 4655, 5035, 5194, 5719, 7049, 8170, 9310, 10070, 10535, 11395, 11438, 12985, 14098, 15953, 21070, 22790, 25970, 28595, 31906, 35245, 40033, 43301, 49343, 57190, 70490, 79765, 80066, 86602, 98686, 111671, 159530, 200165, 216505, 223342, 246715, 303107, 400330, 433010, 493430, 558355, 606214, 1116710, 1515535, 2121749, 3031070, 4243498, 10608745, 21217490]

約数ペア:

[(1, 21217490), (2, 10608745), (5, 4243498), (7, 3031070), (10, 2121749), (14, 1515535), (19, 1116710), (35, 606214), (38, 558355), (43, 493430), (49, 433010), (53, 400330), (70, 303107), (86, 246715), (95, 223342), (98, 216505), (106, 200165), (133, 159530), (190, 111671), (215, 98686), (245, 86602), (265, 80066), (266, 79765), (301, 70490), (371, 57190), (430, 49343), (490, 43301), (530, 40033), (602, 35245), (665, 31906), (742, 28595), (817, 25970), (931, 22790), (1007, 21070), (1330, 15953), (1505, 14098), (1634, 12985), (1855, 11438), (1862, 11395), (2014, 10535), (2107, 10070), (2279, 9310), (2597, 8170), (3010, 7049), (3710, 5719), (4085, 5194), (4214, 5035), (4558, 4655)]