20986758

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{6899}}^1$

素因数の和:6933

約数の個数: 36

約数和(自身を含む): 49245300

約数和(自身を除く): 28258542

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 169, 234, 338, 507, 1014, 1521, 3042, 6899, 13798, 20697, 41394, 62091, 89687, 124182, 179374, 269061, 538122, 807183, 1165931, 1614366, 2331862, 3497793, 6995586, 10493379, 20986758]

約数ペア:

[(1, 20986758), (2, 10493379), (3, 6995586), (6, 3497793), (9, 2331862), (13, 1614366), (18, 1165931), (26, 807183), (39, 538122), (78, 269061), (117, 179374), (169, 124182), (234, 89687), (338, 62091), (507, 41394), (1014, 20697), (1521, 13798), (3042, 6899)]