21488390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:138

約数の個数: 96

約数和(自身を含む): 50561280

約数和(自身を除く): 29072890

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 43, 55, 59, 70, 77, 86, 110, 118, 121, 154, 215, 242, 295, 301, 385, 413, 430, 473, 590, 602, 605, 649, 770, 826, 847, 946, 1210, 1298, 1505, 1694, 2065, 2365, 2537, 3010, 3245, 3311, 4130, 4235, 4543, 4730, 5074, 5203, 6490, 6622, 7139, 8470, 9086, 10406, 12685, 14278, 16555, 17759, 22715, 25370, 26015, 27907, 33110, 35518, 35695, 36421, 45430, 49973, 52030, 55814, 71390, 72842, 88795, 99946, 139535, 177590, 182105, 195349, 249865, 279070, 306977, 364210, 390698, 499730, 613954, 976745, 1534885, 1953490, 2148839, 3069770, 4297678, 10744195, 21488390]

約数ペア:

[(1, 21488390), (2, 10744195), (5, 4297678), (7, 3069770), (10, 2148839), (11, 1953490), (14, 1534885), (22, 976745), (35, 613954), (43, 499730), (55, 390698), (59, 364210), (70, 306977), (77, 279070), (86, 249865), (110, 195349), (118, 182105), (121, 177590), (154, 139535), (215, 99946), (242, 88795), (295, 72842), (301, 71390), (385, 55814), (413, 52030), (430, 49973), (473, 45430), (590, 36421), (602, 35695), (605, 35518), (649, 33110), (770, 27907), (826, 26015), (847, 25370), (946, 22715), (1210, 17759), (1298, 16555), (1505, 14278), (1694, 12685), (2065, 10406), (2365, 9086), (2537, 8470), (3010, 7139), (3245, 6622), (3311, 6490), (4130, 5203), (4235, 5074), (4543, 4730)]