21284085

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 18529035

約数列:

[1, 3, 5, 15, 17, 19, 23, 51, 57, 69, 85, 95, 115, 191, 255, 285, 323, 345, 391, 437, 573, 955, 969, 1173, 1311, 1615, 1955, 2185, 2865, 3247, 3629, 4393, 4845, 5865, 6555, 7429, 9741, 10887, 13179, 16235, 18145, 21965, 22287, 37145, 48705, 54435, 61693, 65895, 74681, 83467, 111435, 185079, 224043, 250401, 308465, 373405, 417335, 925395, 1120215, 1252005, 1418939, 4256817, 7094695, 21284085]

約数ペア:

[(1, 21284085), (3, 7094695), (5, 4256817), (15, 1418939), (17, 1252005), (19, 1120215), (23, 925395), (51, 417335), (57, 373405), (69, 308465), (85, 250401), (95, 224043), (115, 185079), (191, 111435), (255, 83467), (285, 74681), (323, 65895), (345, 61693), (391, 54435), (437, 48705), (573, 37145), (955, 22287), (969, 21965), (1173, 18145), (1311, 16235), (1615, 13179), (1955, 10887), (2185, 9741), (2865, 7429), (3247, 6555), (3629, 5865), (4393, 4845)]