42720237

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:243

約数の個数: 64

約数和(自身を含む): 76608000

約数和(自身を除く): 33887763

約数列:

[1, 3, 7, 9, 21, 27, 37, 41, 63, 111, 123, 149, 189, 259, 287, 333, 369, 447, 777, 861, 999, 1043, 1107, 1341, 1517, 2331, 2583, 3129, 4023, 4551, 5513, 6109, 6993, 7749, 9387, 10619, 13653, 16539, 18327, 28161, 31857, 38591, 40959, 42763, 49617, 54981, 95571, 115773, 128289, 148851, 164943, 226033, 286713, 347319, 384867, 678099, 1041957, 1154601, 1582231, 2034297, 4746693, 6102891, 14240079, 42720237]

約数ペア:

[(1, 42720237), (3, 14240079), (7, 6102891), (9, 4746693), (21, 2034297), (27, 1582231), (37, 1154601), (41, 1041957), (63, 678099), (111, 384867), (123, 347319), (149, 286713), (189, 226033), (259, 164943), (287, 148851), (333, 128289), (369, 115773), (447, 95571), (777, 54981), (861, 49617), (999, 42763), (1043, 40959), (1107, 38591), (1341, 31857), (1517, 28161), (2331, 18327), (2583, 16539), (3129, 13653), (4023, 10619), (4551, 9387), (5513, 7749), (6109, 6993)]