18860868

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{211}}^1$

素因数の和:425

約数の個数: 72

約数和(自身を含む): 51856896

約数和(自身を除く): 32996028

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 191, 211, 234, 382, 422, 468, 573, 633, 764, 844, 1146, 1266, 1719, 1899, 2292, 2483, 2532, 2743, 3438, 3798, 4966, 5486, 6876, 7449, 7596, 8229, 9932, 10972, 14898, 16458, 22347, 24687, 29796, 32916, 40301, 44694, 49374, 80602, 89388, 98748, 120903, 161204, 241806, 362709, 483612, 523913, 725418, 1047826, 1450836, 1571739, 2095652, 3143478, 4715217, 6286956, 9430434, 18860868]

約数ペア:

[(1, 18860868), (2, 9430434), (3, 6286956), (4, 4715217), (6, 3143478), (9, 2095652), (12, 1571739), (13, 1450836), (18, 1047826), (26, 725418), (36, 523913), (39, 483612), (52, 362709), (78, 241806), (117, 161204), (156, 120903), (191, 98748), (211, 89388), (234, 80602), (382, 49374), (422, 44694), (468, 40301), (573, 32916), (633, 29796), (764, 24687), (844, 22347), (1146, 16458), (1266, 14898), (1719, 10972), (1899, 9932), (2292, 8229), (2483, 7596), (2532, 7449), (2743, 6876), (3438, 5486), (3798, 4966)]