21854690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:108

約数の個数: 128

約数和(自身を含む): 52254720

約数和(自身を除く): 30400030

約数列:

[1, 2, 5, 10, 11, 13, 17, 22, 26, 29, 31, 34, 55, 58, 62, 65, 85, 110, 130, 143, 145, 155, 170, 187, 221, 286, 290, 310, 319, 341, 374, 377, 403, 442, 493, 527, 638, 682, 715, 754, 806, 899, 935, 986, 1054, 1105, 1430, 1595, 1705, 1798, 1870, 1885, 2015, 2210, 2431, 2465, 2635, 3190, 3410, 3770, 4030, 4147, 4433, 4495, 4862, 4930, 5270, 5423, 5797, 6409, 6851, 8294, 8866, 8990, 9889, 10846, 11594, 11687, 12155, 12818, 13702, 15283, 19778, 20735, 22165, 23374, 24310, 27115, 28985, 30566, 32045, 34255, 41470, 44330, 49445, 54230, 57970, 58435, 64090, 68510, 70499, 75361, 76415, 98890, 116870, 128557, 140998, 150722, 152830, 168113, 198679, 257114, 336226, 352495, 376805, 397358, 642785, 704990, 753610, 840565, 993395, 1285570, 1681130, 1986790, 2185469, 4370938, 10927345, 21854690]

約数ペア:

[(1, 21854690), (2, 10927345), (5, 4370938), (10, 2185469), (11, 1986790), (13, 1681130), (17, 1285570), (22, 993395), (26, 840565), (29, 753610), (31, 704990), (34, 642785), (55, 397358), (58, 376805), (62, 352495), (65, 336226), (85, 257114), (110, 198679), (130, 168113), (143, 152830), (145, 150722), (155, 140998), (170, 128557), (187, 116870), (221, 98890), (286, 76415), (290, 75361), (310, 70499), (319, 68510), (341, 64090), (374, 58435), (377, 57970), (403, 54230), (442, 49445), (493, 44330), (527, 41470), (638, 34255), (682, 32045), (715, 30566), (754, 28985), (806, 27115), (899, 24310), (935, 23374), (986, 22165), (1054, 20735), (1105, 19778), (1430, 15283), (1595, 13702), (1705, 12818), (1798, 12155), (1870, 11687), (1885, 11594), (2015, 10846), (2210, 9889), (2431, 8990), (2465, 8866), (2635, 8294), (3190, 6851), (3410, 6409), (3770, 5797), (4030, 5423), (4147, 5270), (4433, 4930), (4495, 4862)]