21000736496

素因数分解:

$2^4\times {\mathrm{257}}^1\times {\mathrm{409}}^1\times {\mathrm{12487}}^1$

素因数の和:13161

約数の個数: 40

約数和(自身を含む): 40950399840

約数和(自身を除く): 19949663344

約数列:

[1, 2, 4, 8, 16, 257, 409, 514, 818, 1028, 1636, 2056, 3272, 4112, 6544, 12487, 24974, 49948, 99896, 105113, 199792, 210226, 420452, 840904, 1681808, 3209159, 5107183, 6418318, 10214366, 12836636, 20428732, 25673272, 40857464, 51346544, 81714928, 1312546031, 2625092062, 5250184124, 10500368248, 21000736496]

約数ペア:

[(1, 21000736496), (2, 10500368248), (4, 5250184124), (8, 2625092062), (16, 1312546031), (257, 81714928), (409, 51346544), (514, 40857464), (818, 25673272), (1028, 20428732), (1636, 12836636), (2056, 10214366), (3272, 6418318), (4112, 5107183), (6544, 3209159), (12487, 1681808), (24974, 840904), (49948, 420452), (99896, 210226), (105113, 199792)]