20787240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{311}}^1\times {\mathrm{557}}^1$

素因数の和:882

約数の個数: 64

約数和(自身を含む): 62674560

約数和(自身を除く): 41887320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 311, 557, 622, 933, 1114, 1244, 1555, 1671, 1866, 2228, 2488, 2785, 3110, 3342, 3732, 4456, 4665, 5570, 6220, 6684, 7464, 8355, 9330, 11140, 12440, 13368, 16710, 18660, 22280, 33420, 37320, 66840, 173227, 346454, 519681, 692908, 866135, 1039362, 1385816, 1732270, 2078724, 2598405, 3464540, 4157448, 5196810, 6929080, 10393620, 20787240]

約数ペア:

[(1, 20787240), (2, 10393620), (3, 6929080), (4, 5196810), (5, 4157448), (6, 3464540), (8, 2598405), (10, 2078724), (12, 1732270), (15, 1385816), (20, 1039362), (24, 866135), (30, 692908), (40, 519681), (60, 346454), (120, 173227), (311, 66840), (557, 37320), (622, 33420), (933, 22280), (1114, 18660), (1244, 16710), (1555, 13368), (1671, 12440), (1866, 11140), (2228, 9330), (2488, 8355), (2785, 7464), (3110, 6684), (3342, 6220), (3732, 5570), (4456, 4665)]