18628412

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 37013760

約数和(自身を除く): 18385348

約数列:

[1, 2, 4, 11, 22, 44, 67, 71, 89, 134, 142, 178, 268, 284, 356, 737, 781, 979, 1474, 1562, 1958, 2948, 3124, 3916, 4757, 5963, 6319, 9514, 11926, 12638, 19028, 23852, 25276, 52327, 65593, 69509, 104654, 131186, 139018, 209308, 262372, 278036, 423373, 846746, 1693492, 4657103, 9314206, 18628412]

約数ペア:

[(1, 18628412), (2, 9314206), (4, 4657103), (11, 1693492), (22, 846746), (44, 423373), (67, 278036), (71, 262372), (89, 209308), (134, 139018), (142, 131186), (178, 104654), (268, 69509), (284, 65593), (356, 52327), (737, 25276), (781, 23852), (979, 19028), (1474, 12638), (1562, 11926), (1958, 9514), (2948, 6319), (3124, 5963), (3916, 4757)]