28875609

素因数分解:

$3^4\times 7^1\times {\mathrm{127}}^1\times {\mathrm{401}}^1$

素因数の和:547

約数の個数: 40

約数和(自身を含む): 49809408

約数和(自身を除く): 20933799

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 127, 189, 381, 401, 567, 889, 1143, 1203, 2667, 2807, 3429, 3609, 8001, 8421, 10287, 10827, 24003, 25263, 32481, 50927, 72009, 75789, 152781, 227367, 356489, 458343, 1069467, 1375029, 3208401, 4125087, 9625203, 28875609]

約数ペア:

[(1, 28875609), (3, 9625203), (7, 4125087), (9, 3208401), (21, 1375029), (27, 1069467), (63, 458343), (81, 356489), (127, 227367), (189, 152781), (381, 75789), (401, 72009), (567, 50927), (889, 32481), (1143, 25263), (1203, 24003), (2667, 10827), (2807, 10287), (3429, 8421), (3609, 8001)]