18867760

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12413}}^1$

素因数の和:12445

約数の個数: 40

約数和(自身を含む): 46180080

約数和(自身を除く): 27312320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12413, 24826, 49652, 62065, 99304, 124130, 198608, 235847, 248260, 471694, 496520, 943388, 993040, 1179235, 1886776, 2358470, 3773552, 4716940, 9433880, 18867760]

約数ペア:

[(1, 18867760), (2, 9433880), (4, 4716940), (5, 3773552), (8, 2358470), (10, 1886776), (16, 1179235), (19, 993040), (20, 943388), (38, 496520), (40, 471694), (76, 248260), (80, 235847), (95, 198608), (152, 124130), (190, 99304), (304, 62065), (380, 49652), (760, 24826), (1520, 12413)]