20050225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 29998080

約数和(自身を除く): 9947855

約数列:

[1, 5, 13, 17, 19, 25, 65, 85, 95, 191, 221, 247, 323, 325, 425, 475, 955, 1105, 1235, 1615, 2483, 3247, 3629, 4199, 4775, 5525, 6175, 8075, 12415, 16235, 18145, 20995, 42211, 47177, 61693, 62075, 81175, 90725, 104975, 211055, 235885, 308465, 802009, 1055275, 1179425, 1542325, 4010045, 20050225]

約数ペア:

[(1, 20050225), (5, 4010045), (13, 1542325), (17, 1179425), (19, 1055275), (25, 802009), (65, 308465), (85, 235885), (95, 211055), (191, 104975), (221, 90725), (247, 81175), (323, 62075), (325, 61693), (425, 47177), (475, 42211), (955, 20995), (1105, 18145), (1235, 16235), (1615, 12415), (2483, 8075), (3247, 6175), (3629, 5525), (4199, 4775)]