20201287780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{607}}^1\times {\mathrm{1019}}^1$

素因数の和:1729

約数の個数: 96

約数和(自身を含む): 45008732160

約数和(自身を除く): 24807444380

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 71, 92, 115, 142, 230, 284, 355, 460, 607, 710, 1019, 1214, 1420, 1633, 2038, 2428, 3035, 3266, 4076, 5095, 6070, 6532, 8165, 10190, 12140, 13961, 16330, 20380, 23437, 27922, 32660, 43097, 46874, 55844, 69805, 72349, 86194, 93748, 117185, 139610, 144698, 172388, 215485, 234370, 279220, 289396, 361745, 430970, 468740, 618533, 723490, 861940, 991231, 1237066, 1446980, 1664027, 1982462, 2474132, 3092665, 3328054, 3964924, 4956155, 6185330, 6656108, 8320135, 9912310, 12370660, 14226259, 16640270, 19824620, 28452518, 33280540, 43915843, 56905036, 71131295, 87831686, 142262590, 175663372, 219579215, 284525180, 439158430, 878316860, 1010064389, 2020128778, 4040257556, 5050321945, 10100643890, 20201287780]

約数ペア:

[(1, 20201287780), (2, 10100643890), (4, 5050321945), (5, 4040257556), (10, 2020128778), (20, 1010064389), (23, 878316860), (46, 439158430), (71, 284525180), (92, 219579215), (115, 175663372), (142, 142262590), (230, 87831686), (284, 71131295), (355, 56905036), (460, 43915843), (607, 33280540), (710, 28452518), (1019, 19824620), (1214, 16640270), (1420, 14226259), (1633, 12370660), (2038, 9912310), (2428, 8320135), (3035, 6656108), (3266, 6185330), (4076, 4956155), (5095, 3964924), (6070, 3328054), (6532, 3092665), (8165, 2474132), (10190, 1982462), (12140, 1664027), (13961, 1446980), (16330, 1237066), (20380, 991231), (23437, 861940), (27922, 723490), (32660, 618533), (43097, 468740), (46874, 430970), (55844, 361745), (69805, 289396), (72349, 279220), (86194, 234370), (93748, 215485), (117185, 172388), (139610, 144698)]