21415758

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{643}}^1$

素因数の和:729

約数の個数: 64

約数和(自身を含む): 53663232

約数和(自身を除く): 32247474

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 61, 78, 91, 122, 182, 183, 273, 366, 427, 546, 643, 793, 854, 1281, 1286, 1586, 1929, 2379, 2562, 3858, 4501, 4758, 5551, 8359, 9002, 11102, 13503, 16653, 16718, 25077, 27006, 33306, 39223, 50154, 58513, 78446, 117026, 117669, 175539, 235338, 274561, 351078, 509899, 549122, 823683, 1019798, 1529697, 1647366, 3059394, 3569293, 7138586, 10707879, 21415758]

約数ペア:

[(1, 21415758), (2, 10707879), (3, 7138586), (6, 3569293), (7, 3059394), (13, 1647366), (14, 1529697), (21, 1019798), (26, 823683), (39, 549122), (42, 509899), (61, 351078), (78, 274561), (91, 235338), (122, 175539), (182, 117669), (183, 117026), (273, 78446), (366, 58513), (427, 50154), (546, 39223), (643, 33306), (793, 27006), (854, 25077), (1281, 16718), (1286, 16653), (1586, 13503), (1929, 11102), (2379, 9002), (2562, 8359), (3858, 5551), (4501, 4758)]