20306988

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43391}}^1$

素因数の和:43414

約数の個数: 36

約数和(自身を含む): 55281408

約数和(自身を除く): 34974420

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 43391, 86782, 130173, 173564, 260346, 390519, 520692, 564083, 781038, 1128166, 1562076, 1692249, 2256332, 3384498, 5076747, 6768996, 10153494, 20306988]

約数ペア:

[(1, 20306988), (2, 10153494), (3, 6768996), (4, 5076747), (6, 3384498), (9, 2256332), (12, 1692249), (13, 1562076), (18, 1128166), (26, 781038), (36, 564083), (39, 520692), (52, 390519), (78, 260346), (117, 173564), (156, 130173), (234, 86782), (468, 43391)]