20337790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{263}}^1$

素因数の和:337

約数の個数: 64

約数和(自身を含む): 43338240

約数和(自身を除く): 23000450

約数列:

[1, 2, 5, 10, 11, 19, 22, 37, 38, 55, 74, 95, 110, 185, 190, 209, 263, 370, 407, 418, 526, 703, 814, 1045, 1315, 1406, 2035, 2090, 2630, 2893, 3515, 4070, 4997, 5786, 7030, 7733, 9731, 9994, 14465, 15466, 19462, 24985, 28930, 38665, 48655, 49970, 54967, 77330, 97310, 107041, 109934, 184889, 214082, 274835, 369778, 535205, 549670, 924445, 1070410, 1848890, 2033779, 4067558, 10168895, 20337790]

約数ペア:

[(1, 20337790), (2, 10168895), (5, 4067558), (10, 2033779), (11, 1848890), (19, 1070410), (22, 924445), (37, 549670), (38, 535205), (55, 369778), (74, 274835), (95, 214082), (110, 184889), (185, 109934), (190, 107041), (209, 97310), (263, 77330), (370, 54967), (407, 49970), (418, 48655), (526, 38665), (703, 28930), (814, 24985), (1045, 19462), (1315, 15466), (1406, 14465), (2035, 9994), (2090, 9731), (2630, 7733), (2893, 7030), (3515, 5786), (4070, 4997)]