20381808

素因数分解:

$2^4\times 3^1\times {\mathrm{61}}^1\times {\mathrm{6961}}^1$

素因数の和:7033

約数の個数: 40

約数和(自身を含む): 53523856

約数和(自身を除く): 33142048

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 61, 122, 183, 244, 366, 488, 732, 976, 1464, 2928, 6961, 13922, 20883, 27844, 41766, 55688, 83532, 111376, 167064, 334128, 424621, 849242, 1273863, 1698484, 2547726, 3396968, 5095452, 6793936, 10190904, 20381808]

約数ペア:

[(1, 20381808), (2, 10190904), (3, 6793936), (4, 5095452), (6, 3396968), (8, 2547726), (12, 1698484), (16, 1273863), (24, 849242), (48, 424621), (61, 334128), (122, 167064), (183, 111376), (244, 83532), (366, 55688), (488, 41766), (732, 27844), (976, 20883), (1464, 13922), (2928, 6961)]