21457898

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{239}}^1$

素因数の和:323

約数の個数: 48

約数和(自身を含む): 41368320

約数和(自身を除く): 19910422

約数列:

[1, 2, 7, 11, 14, 22, 53, 77, 106, 121, 154, 239, 242, 371, 478, 583, 742, 847, 1166, 1673, 1694, 2629, 3346, 4081, 5258, 6413, 8162, 12667, 12826, 18403, 25334, 28919, 36806, 44891, 57838, 88669, 89782, 139337, 177338, 202433, 278674, 404866, 975359, 1532707, 1950718, 3065414, 10728949, 21457898]

約数ペア:

[(1, 21457898), (2, 10728949), (7, 3065414), (11, 1950718), (14, 1532707), (22, 975359), (53, 404866), (77, 278674), (106, 202433), (121, 177338), (154, 139337), (239, 89782), (242, 88669), (371, 57838), (478, 44891), (583, 36806), (742, 28919), (847, 25334), (1166, 18403), (1673, 12826), (1694, 12667), (2629, 8162), (3346, 6413), (4081, 5258)]