21548205

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1021}}^1$

素因数の和:1106

約数の個数: 48

約数和(自身を含む): 43365504

約数和(自身を除く): 21817299

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 67, 105, 201, 315, 335, 469, 603, 1005, 1021, 1407, 2345, 3015, 3063, 4221, 5105, 7035, 7147, 9189, 15315, 21105, 21441, 35735, 45945, 64323, 68407, 107205, 205221, 321615, 342035, 478849, 615663, 1026105, 1436547, 2394245, 3078315, 4309641, 7182735, 21548205]

約数ペア:

[(1, 21548205), (3, 7182735), (5, 4309641), (7, 3078315), (9, 2394245), (15, 1436547), (21, 1026105), (35, 615663), (45, 478849), (63, 342035), (67, 321615), (105, 205221), (201, 107205), (315, 68407), (335, 64323), (469, 45945), (603, 35735), (1005, 21441), (1021, 21105), (1407, 15315), (2345, 9189), (3015, 7147), (3063, 7035), (4221, 5105)]