21494682

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:240

約数の個数: 72

約数和(自身を含む): 52284960

約数和(自身を除く): 30790278

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 71, 99, 121, 139, 142, 198, 213, 242, 278, 363, 417, 426, 639, 726, 781, 834, 1089, 1251, 1278, 1529, 1562, 2178, 2343, 2502, 3058, 4587, 4686, 7029, 8591, 9174, 9869, 13761, 14058, 16819, 17182, 19738, 25773, 27522, 29607, 33638, 50457, 51546, 59214, 77319, 88821, 100914, 108559, 151371, 154638, 177642, 217118, 302742, 325677, 651354, 977031, 1194149, 1954062, 2388298, 3582447, 7164894, 10747341, 21494682]

約数ペア:

[(1, 21494682), (2, 10747341), (3, 7164894), (6, 3582447), (9, 2388298), (11, 1954062), (18, 1194149), (22, 977031), (33, 651354), (66, 325677), (71, 302742), (99, 217118), (121, 177642), (139, 154638), (142, 151371), (198, 108559), (213, 100914), (242, 88821), (278, 77319), (363, 59214), (417, 51546), (426, 50457), (639, 33638), (726, 29607), (781, 27522), (834, 25773), (1089, 19738), (1251, 17182), (1278, 16819), (1529, 14058), (1562, 13761), (2178, 9869), (2343, 9174), (2502, 8591), (3058, 7029), (4587, 4686)]