21809710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{1321}}^1$

素因数の和:1468

約数の個数: 32

約数和(自身を含む): 42642432

約数和(自身を除く): 20832722

約数列:

[1, 2, 5, 10, 13, 26, 65, 127, 130, 254, 635, 1270, 1321, 1651, 2642, 3302, 6605, 8255, 13210, 16510, 17173, 34346, 85865, 167767, 171730, 335534, 838835, 1677670, 2180971, 4361942, 10904855, 21809710]

約数ペア:

[(1, 21809710), (2, 10904855), (5, 4361942), (10, 2180971), (13, 1677670), (26, 838835), (65, 335534), (127, 171730), (130, 167767), (254, 85865), (635, 34346), (1270, 17173), (1321, 16510), (1651, 13210), (2642, 8255), (3302, 6605)]