21235510

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{389}}^1$

素因数の和:552

約数の個数: 32

約数和(自身を含む): 39424320

約数和(自身を除く): 18188810

約数列:

[1, 2, 5, 10, 53, 103, 106, 206, 265, 389, 515, 530, 778, 1030, 1945, 3890, 5459, 10918, 20617, 27295, 40067, 41234, 54590, 80134, 103085, 200335, 206170, 400670, 2123551, 4247102, 10617755, 21235510]

約数ペア:

[(1, 21235510), (2, 10617755), (5, 4247102), (10, 2123551), (53, 400670), (103, 206170), (106, 200335), (206, 103085), (265, 80134), (389, 54590), (515, 41234), (530, 40067), (778, 27295), (1030, 20617), (1945, 10918), (3890, 5459)]