21498022

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:173

約数の個数: 64

約数和(自身を含む): 42223104

約数和(自身を除く): 20725082

約数列:

[1, 2, 7, 13, 14, 26, 41, 43, 67, 82, 86, 91, 134, 182, 287, 301, 469, 533, 559, 574, 602, 871, 938, 1066, 1118, 1742, 1763, 2747, 2881, 3526, 3731, 3913, 5494, 5762, 6097, 7462, 7826, 12194, 12341, 19229, 20167, 22919, 24682, 35711, 37453, 38458, 40334, 45838, 71422, 74906, 118121, 160433, 236242, 249977, 262171, 320866, 499954, 524342, 826847, 1535573, 1653694, 3071146, 10749011, 21498022]

約数ペア:

[(1, 21498022), (2, 10749011), (7, 3071146), (13, 1653694), (14, 1535573), (26, 826847), (41, 524342), (43, 499954), (67, 320866), (82, 262171), (86, 249977), (91, 236242), (134, 160433), (182, 118121), (287, 74906), (301, 71422), (469, 45838), (533, 40334), (559, 38458), (574, 37453), (602, 35711), (871, 24682), (938, 22919), (1066, 20167), (1118, 19229), (1742, 12341), (1763, 12194), (2747, 7826), (2881, 7462), (3526, 6097), (3731, 5762), (3913, 5494)]