7881880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1$

素因数の和:268

約数の個数: 64

約数和(自身を含む): 19167840

約数和(自身を除く): 11285960

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 67, 68, 85, 134, 136, 170, 173, 268, 335, 340, 346, 536, 670, 680, 692, 865, 1139, 1340, 1384, 1730, 2278, 2680, 2941, 3460, 4556, 5695, 5882, 6920, 9112, 11390, 11591, 11764, 14705, 22780, 23182, 23528, 29410, 45560, 46364, 57955, 58820, 92728, 115910, 117640, 197047, 231820, 394094, 463640, 788188, 985235, 1576376, 1970470, 3940940, 7881880]

約数ペア:

[(1, 7881880), (2, 3940940), (4, 1970470), (5, 1576376), (8, 985235), (10, 788188), (17, 463640), (20, 394094), (34, 231820), (40, 197047), (67, 117640), (68, 115910), (85, 92728), (134, 58820), (136, 57955), (170, 46364), (173, 45560), (268, 29410), (335, 23528), (340, 23182), (346, 22780), (536, 14705), (670, 11764), (680, 11591), (692, 11390), (865, 9112), (1139, 6920), (1340, 5882), (1384, 5695), (1730, 4556), (2278, 3460), (2680, 2941)]