20351205

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^2$

素因数の和:147

約数の個数: 72

約数和(自身を含む): 42876288

約数和(自身を除く): 22525083

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 35, 45, 53, 63, 69, 105, 115, 159, 161, 207, 265, 315, 345, 371, 477, 483, 795, 805, 1035, 1113, 1219, 1449, 1855, 2385, 2415, 2809, 3339, 3657, 5565, 6095, 7245, 8427, 8533, 10971, 14045, 16695, 18285, 19663, 25281, 25599, 42135, 42665, 54855, 58989, 64607, 76797, 98315, 126405, 127995, 176967, 193821, 294945, 323035, 383985, 452249, 581463, 884835, 969105, 1356747, 2261245, 2907315, 4070241, 6783735, 20351205]

約数ペア:

[(1, 20351205), (3, 6783735), (5, 4070241), (7, 2907315), (9, 2261245), (15, 1356747), (21, 969105), (23, 884835), (35, 581463), (45, 452249), (53, 383985), (63, 323035), (69, 294945), (105, 193821), (115, 176967), (159, 127995), (161, 126405), (207, 98315), (265, 76797), (315, 64607), (345, 58989), (371, 54855), (477, 42665), (483, 42135), (795, 25599), (805, 25281), (1035, 19663), (1113, 18285), (1219, 16695), (1449, 14045), (1855, 10971), (2385, 8533), (2415, 8427), (2809, 7245), (3339, 6095), (3657, 5565)]