21152985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{461}}^1$

素因数の和:518

約数の個数: 64

約数和(自身を含む): 42577920

約数和(自身を除く): 21424935

約数列:

[1, 3, 5, 7, 15, 19, 21, 23, 35, 57, 69, 95, 105, 115, 133, 161, 285, 345, 399, 437, 461, 483, 665, 805, 1311, 1383, 1995, 2185, 2305, 2415, 3059, 3227, 6555, 6915, 8759, 9177, 9681, 10603, 15295, 16135, 26277, 31809, 43795, 45885, 48405, 53015, 61313, 74221, 131385, 159045, 183939, 201457, 222663, 306565, 371105, 604371, 919695, 1007285, 1113315, 1410199, 3021855, 4230597, 7050995, 21152985]

約数ペア:

[(1, 21152985), (3, 7050995), (5, 4230597), (7, 3021855), (15, 1410199), (19, 1113315), (21, 1007285), (23, 919695), (35, 604371), (57, 371105), (69, 306565), (95, 222663), (105, 201457), (115, 183939), (133, 159045), (161, 131385), (285, 74221), (345, 61313), (399, 53015), (437, 48405), (461, 45885), (483, 43795), (665, 31809), (805, 26277), (1311, 16135), (1383, 15295), (1995, 10603), (2185, 9681), (2305, 9177), (2415, 8759), (3059, 6915), (3227, 6555)]