21797264

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{631}}^1$

素因数の和:783

約数の個数: 40

約数和(自身を含む): 45139968

約数和(自身を除く): 23342704

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 127, 136, 254, 272, 508, 631, 1016, 1262, 2032, 2159, 2524, 4318, 5048, 8636, 10096, 10727, 17272, 21454, 34544, 42908, 80137, 85816, 160274, 171632, 320548, 641096, 1282192, 1362329, 2724658, 5449316, 10898632, 21797264]

約数ペア:

[(1, 21797264), (2, 10898632), (4, 5449316), (8, 2724658), (16, 1362329), (17, 1282192), (34, 641096), (68, 320548), (127, 171632), (136, 160274), (254, 85816), (272, 80137), (508, 42908), (631, 34544), (1016, 21454), (1262, 17272), (2032, 10727), (2159, 10096), (2524, 8636), (4318, 5048)]