21497814

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{191}}^1$

素因数の和:262

約数の個数: 72

約数和(自身を含む): 52071552

約数和(自身を除く): 30573738

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 37, 39, 74, 78, 111, 117, 169, 191, 222, 234, 333, 338, 382, 481, 507, 573, 666, 962, 1014, 1146, 1443, 1521, 1719, 2483, 2886, 3042, 3438, 4329, 4966, 6253, 7067, 7449, 8658, 12506, 14134, 14898, 18759, 21201, 22347, 32279, 37518, 42402, 44694, 56277, 63603, 64558, 91871, 96837, 112554, 127206, 183742, 193674, 275613, 290511, 551226, 581022, 826839, 1194323, 1653678, 2388646, 3582969, 7165938, 10748907, 21497814]

約数ペア:

[(1, 21497814), (2, 10748907), (3, 7165938), (6, 3582969), (9, 2388646), (13, 1653678), (18, 1194323), (26, 826839), (37, 581022), (39, 551226), (74, 290511), (78, 275613), (111, 193674), (117, 183742), (169, 127206), (191, 112554), (222, 96837), (234, 91871), (333, 64558), (338, 63603), (382, 56277), (481, 44694), (507, 42402), (573, 37518), (666, 32279), (962, 22347), (1014, 21201), (1146, 18759), (1443, 14898), (1521, 14134), (1719, 12506), (2483, 8658), (2886, 7449), (3042, 7067), (3438, 6253), (4329, 4966)]