64759781860

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{907}}^1\times {\mathrm{7951}}^1$

素因数の和:9316

約数の個数: 48

約数和(自身を含む): 136465862400

約数和(自身を除く): 71706080540

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 907, 1796, 1814, 2245, 3628, 4490, 4535, 7951, 8980, 9070, 15902, 18140, 31804, 39755, 79510, 159020, 407243, 814486, 1628972, 2036215, 3569999, 4072430, 7139998, 7211557, 8144860, 14279996, 14423114, 17849995, 28846228, 35699990, 36057785, 71399980, 72115570, 144231140, 3237989093, 6475978186, 12951956372, 16189945465, 32379890930, 64759781860]

約数ペア:

[(1, 64759781860), (2, 32379890930), (4, 16189945465), (5, 12951956372), (10, 6475978186), (20, 3237989093), (449, 144231140), (898, 72115570), (907, 71399980), (1796, 36057785), (1814, 35699990), (2245, 28846228), (3628, 17849995), (4490, 14423114), (4535, 14279996), (7951, 8144860), (8980, 7211557), (9070, 7139998), (15902, 4072430), (18140, 3569999), (31804, 2036215), (39755, 1628972), (79510, 814486), (159020, 407243)]