21197085

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{293}}^1$

素因数の和:374

約数の個数: 64

約数和(自身を含む): 42674688

約数和(自身を除く): 21477603

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 53, 65, 91, 105, 159, 195, 265, 273, 293, 371, 455, 689, 795, 879, 1113, 1365, 1465, 1855, 2051, 2067, 3445, 3809, 4395, 4823, 5565, 6153, 10255, 10335, 11427, 14469, 15529, 19045, 24115, 26663, 30765, 46587, 57135, 72345, 77645, 79989, 108703, 133315, 201877, 232935, 326109, 399945, 543515, 605631, 1009385, 1413139, 1630545, 3028155, 4239417, 7065695, 21197085]

約数ペア:

[(1, 21197085), (3, 7065695), (5, 4239417), (7, 3028155), (13, 1630545), (15, 1413139), (21, 1009385), (35, 605631), (39, 543515), (53, 399945), (65, 326109), (91, 232935), (105, 201877), (159, 133315), (195, 108703), (265, 79989), (273, 77645), (293, 72345), (371, 57135), (455, 46587), (689, 30765), (795, 26663), (879, 24115), (1113, 19045), (1365, 15529), (1465, 14469), (1855, 11427), (2051, 10335), (2067, 10255), (3445, 6153), (3809, 5565), (4395, 4823)]