21388300

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{11257}}^1$

素因数の和:11290

約数の個数: 36

約数和(自身を含む): 48859720

約数和(自身を除く): 27471420

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1900, 11257, 22514, 45028, 56285, 112570, 213883, 225140, 281425, 427766, 562850, 855532, 1069415, 1125700, 2138830, 4277660, 5347075, 10694150, 21388300]

約数ペア:

[(1, 21388300), (2, 10694150), (4, 5347075), (5, 4277660), (10, 2138830), (19, 1125700), (20, 1069415), (25, 855532), (38, 562850), (50, 427766), (76, 281425), (95, 225140), (100, 213883), (190, 112570), (380, 56285), (475, 45028), (950, 22514), (1900, 11257)]