28659260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{269}}^1\times {\mathrm{761}}^1$

素因数の和:1046

約数の個数: 48

約数和(自身を含む): 69128640

約数和(自身を除く): 40469380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 269, 538, 761, 1076, 1345, 1522, 1883, 2690, 3044, 3766, 3805, 5327, 5380, 7532, 7610, 9415, 10654, 15220, 18830, 21308, 26635, 37660, 53270, 106540, 204709, 409418, 818836, 1023545, 1432963, 2047090, 2865926, 4094180, 5731852, 7164815, 14329630, 28659260]

約数ペア:

[(1, 28659260), (2, 14329630), (4, 7164815), (5, 5731852), (7, 4094180), (10, 2865926), (14, 2047090), (20, 1432963), (28, 1023545), (35, 818836), (70, 409418), (140, 204709), (269, 106540), (538, 53270), (761, 37660), (1076, 26635), (1345, 21308), (1522, 18830), (1883, 15220), (2690, 10654), (3044, 9415), (3766, 7610), (3805, 7532), (5327, 5380)]