4221021

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 6912000

約数和(自身を除く): 2690979

約数列:

[1, 3, 7, 19, 21, 57, 71, 133, 149, 213, 399, 447, 497, 1043, 1349, 1491, 2831, 3129, 4047, 8493, 9443, 10579, 19817, 28329, 31737, 59451, 74053, 201001, 222159, 603003, 1407007, 4221021]

約数ペア:

[(1, 4221021), (3, 1407007), (7, 603003), (19, 222159), (21, 201001), (57, 74053), (71, 59451), (133, 31737), (149, 28329), (213, 19817), (399, 10579), (447, 9443), (497, 8493), (1043, 4047), (1349, 3129), (1491, 2831)]