20500974

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1109}}^1$

素因数の和:1209

約数の個数: 48

約数和(自身を含む): 48484800

約数和(自身を除く): 27983826

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 79, 117, 158, 234, 237, 474, 711, 1027, 1109, 1422, 2054, 2218, 3081, 3327, 6162, 6654, 9243, 9981, 14417, 18486, 19962, 28834, 43251, 86502, 87611, 129753, 175222, 259506, 262833, 525666, 788499, 1138943, 1576998, 2277886, 3416829, 6833658, 10250487, 20500974]

約数ペア:

[(1, 20500974), (2, 10250487), (3, 6833658), (6, 3416829), (9, 2277886), (13, 1576998), (18, 1138943), (26, 788499), (39, 525666), (78, 262833), (79, 259506), (117, 175222), (158, 129753), (234, 87611), (237, 86502), (474, 43251), (711, 28834), (1027, 19962), (1109, 18486), (1422, 14417), (2054, 9981), (2218, 9243), (3081, 6654), (3327, 6162)]