1556415

素因数分解:

$3^6\times 5^1\times 7^1\times {\mathrm{61}}^1$

素因数の和:91

約数の個数: 56

約数和(自身を含む): 3252768

約数和(自身を除く): 1696353

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 61, 63, 81, 105, 135, 183, 189, 243, 305, 315, 405, 427, 549, 567, 729, 915, 945, 1215, 1281, 1647, 1701, 2135, 2745, 2835, 3645, 3843, 4941, 5103, 6405, 8235, 8505, 11529, 14823, 19215, 24705, 25515, 34587, 44469, 57645, 74115, 103761, 172935, 222345, 311283, 518805, 1556415]

約数ペア:

[(1, 1556415), (3, 518805), (5, 311283), (7, 222345), (9, 172935), (15, 103761), (21, 74115), (27, 57645), (35, 44469), (45, 34587), (61, 25515), (63, 24705), (81, 19215), (105, 14823), (135, 11529), (183, 8505), (189, 8235), (243, 6405), (305, 5103), (315, 4941), (405, 3843), (427, 3645), (549, 2835), (567, 2745), (729, 2135), (915, 1701), (945, 1647), (1215, 1281)]