21590280

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19991}}^1$

素因数の和:20011

約数の個数: 64

約数和(自身を含む): 71971200

約数和(自身を除く): 50380920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 19991, 39982, 59973, 79964, 99955, 119946, 159928, 179919, 199910, 239892, 299865, 359838, 399820, 479784, 539757, 599730, 719676, 799640, 899595, 1079514, 1199460, 1439352, 1799190, 2159028, 2398920, 2698785, 3598380, 4318056, 5397570, 7196760, 10795140, 21590280]

約数ペア:

[(1, 21590280), (2, 10795140), (3, 7196760), (4, 5397570), (5, 4318056), (6, 3598380), (8, 2698785), (9, 2398920), (10, 2159028), (12, 1799190), (15, 1439352), (18, 1199460), (20, 1079514), (24, 899595), (27, 799640), (30, 719676), (36, 599730), (40, 539757), (45, 479784), (54, 399820), (60, 359838), (72, 299865), (90, 239892), (108, 199910), (120, 179919), (135, 159928), (180, 119946), (216, 99955), (270, 79964), (360, 59973), (540, 39982), (1080, 19991)]