20438770

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2617}}^1$

素因数の和:2706

約数の個数: 32

約数和(自身を含む): 40715136

約数和(自身を除く): 20276366

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 355, 710, 781, 1562, 2617, 3905, 5234, 7810, 13085, 26170, 28787, 57574, 143935, 185807, 287870, 371614, 929035, 1858070, 2043877, 4087754, 10219385, 20438770]

約数ペア:

[(1, 20438770), (2, 10219385), (5, 4087754), (10, 2043877), (11, 1858070), (22, 929035), (55, 371614), (71, 287870), (110, 185807), (142, 143935), (355, 57574), (710, 28787), (781, 26170), (1562, 13085), (2617, 7810), (3905, 5234)]