21099687088

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77572379}}^1$

素因数の和:77572404

約数の個数: 20

約数和(自身を含む): 43285388040

約数和(自身を除く): 22185700952

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77572379, 155144758, 310289516, 620579032, 1241158064, 1318730443, 2637460886, 5274921772, 10549843544, 21099687088]

約数ペア:

[(1, 21099687088), (2, 10549843544), (4, 5274921772), (8, 2637460886), (16, 1318730443), (17, 1241158064), (34, 620579032), (68, 310289516), (136, 155144758), (272, 77572379)]