18840843

素因数分解:

$3^4\times 7^2\times {\mathrm{47}}^1\times {\mathrm{101}}^1$

素因数の和:174

約数の個数: 60

約数和(自身を含む): 33767712

約数和(自身を除く): 14926869

約数列:

[1, 3, 7, 9, 21, 27, 47, 49, 63, 81, 101, 141, 147, 189, 303, 329, 423, 441, 567, 707, 909, 987, 1269, 1323, 2121, 2303, 2727, 2961, 3807, 3969, 4747, 4949, 6363, 6909, 8181, 8883, 14241, 14847, 19089, 20727, 26649, 33229, 42723, 44541, 57267, 62181, 99687, 128169, 133623, 186543, 232603, 299061, 384507, 400869, 697809, 897183, 2093427, 2691549, 6280281, 18840843]

約数ペア:

[(1, 18840843), (3, 6280281), (7, 2691549), (9, 2093427), (21, 897183), (27, 697809), (47, 400869), (49, 384507), (63, 299061), (81, 232603), (101, 186543), (141, 133623), (147, 128169), (189, 99687), (303, 62181), (329, 57267), (423, 44541), (441, 42723), (567, 33229), (707, 26649), (909, 20727), (987, 19089), (1269, 14847), (1323, 14241), (2121, 8883), (2303, 8181), (2727, 6909), (2961, 6363), (3807, 4949), (3969, 4747)]