18736280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{277}}^1$

素因数の和:396

約数の個数: 64

約数和(自身を含む): 45036000

約数和(自身を除く): 26299720

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 89, 95, 152, 178, 190, 277, 356, 380, 445, 554, 712, 760, 890, 1108, 1385, 1691, 1780, 2216, 2770, 3382, 3560, 5263, 5540, 6764, 8455, 10526, 11080, 13528, 16910, 21052, 24653, 26315, 33820, 42104, 49306, 52630, 67640, 98612, 105260, 123265, 197224, 210520, 246530, 468407, 493060, 936814, 986120, 1873628, 2342035, 3747256, 4684070, 9368140, 18736280]

約数ペア:

[(1, 18736280), (2, 9368140), (4, 4684070), (5, 3747256), (8, 2342035), (10, 1873628), (19, 986120), (20, 936814), (38, 493060), (40, 468407), (76, 246530), (89, 210520), (95, 197224), (152, 123265), (178, 105260), (190, 98612), (277, 67640), (356, 52630), (380, 49306), (445, 42104), (554, 33820), (712, 26315), (760, 24653), (890, 21052), (1108, 16910), (1385, 13528), (1691, 11080), (1780, 10526), (2216, 8455), (2770, 6764), (3382, 5540), (3560, 5263)]