21224240

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{2089}}^1$

素因数の和:2229

約数の個数: 40

約数和(自身を含む): 49758720

約数和(自身を除く): 28534480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2089, 2540, 4178, 5080, 8356, 10160, 10445, 16712, 20890, 33424, 41780, 83560, 167120, 265303, 530606, 1061212, 1326515, 2122424, 2653030, 4244848, 5306060, 10612120, 21224240]

約数ペア:

[(1, 21224240), (2, 10612120), (4, 5306060), (5, 4244848), (8, 2653030), (10, 2122424), (16, 1326515), (20, 1061212), (40, 530606), (80, 265303), (127, 167120), (254, 83560), (508, 41780), (635, 33424), (1016, 20890), (1270, 16712), (2032, 10445), (2089, 10160), (2540, 8356), (4178, 5080)]