21619720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28447}}^1$

素因数の和:28477

約数の個数: 32

約数和(自身を含む): 51206400

約数和(自身を除く): 29586680

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28447, 56894, 113788, 142235, 227576, 284470, 540493, 568940, 1080986, 1137880, 2161972, 2702465, 4323944, 5404930, 10809860, 21619720]

約数ペア:

[(1, 21619720), (2, 10809860), (4, 5404930), (5, 4323944), (8, 2702465), (10, 2161972), (19, 1137880), (20, 1080986), (38, 568940), (40, 540493), (76, 284470), (95, 227576), (152, 142235), (190, 113788), (380, 56894), (760, 28447)]